New favorite opening: Crazy Noisy Bizarre Town which is the opening to JoJo's Bizarre Adventure: Diamond is Unbreakable.

It just sounds really really cool, even if it's not very fitting. I despise the fact they changed the opening theme to something different early in the series that contained so much foreshadowing that nothing made sense until like 5 episodes later.

https://www.youtube.com/watch?v=ew5enka6LtA link

I just recently started watching Hunter X Hunter 2011, and I really love the opening for it. It's so happy and uplifting, it's one of the few openings I actually sit through as each episode starts.

Another one would be One Punch Man, since I've been watching it every week as it premieres on Toonami. This show really lived up to the hype for me, so I'm happy the opening did it justice.

There are so many anime openings that I like so I
tried to narrow it down. So here are a few of them. I put the name of
the song, the band, and then the anime so if anyone wants to check them
out. Sorry the list is still soooooo long XD

1) Goya no Machiawase by Hello Sleepwalkers ----- Noragami OP
2) Daisuki nano ni by Kylee ----- Zetsuen no Tempest OP 2
3) Just Fly Away by EDGE of LIFE ----- Gundam Build Fighters Try OP 2
4) Colors of the Heart by UVERworld ----- Blood + OP 3
5) AMAZING BREAK by TERRASPEX ----- Terra Formars OP
6) Butterfly Core by VALSHE ----- Detective Conan OP 37
7) Silly-go-Round by FictionJunction YUUKA ----- .hack//Roots OP
8) Zen by Attack Haus ----- Otogizoushi OP 1
9) Kyouran Key Kids!! by THE ORAL CIGARETTES -----Noragami Aragoto OP
10) Trust by Salia ----- Vandread OP
11) Get the Glory by Ayako Nakanomori ----- Tenkai Knights OP
12) Katoniago by FLiP ----- Yotinuki Gintama-san OP 4
13) Kindan no Resistance by Nana Mizuki ----- Cross Ange: Tenshi to Ryuu no Rondo OP 1
14) Sirius by Eir Aoi ----- Kill la Kill OP 1
15) Hana wa Odore ya Iroha ni Ho by Team "Hanayamata" ----- Hanayamata OP
16) Kyoumei no True Force by Hitomi Harada ----- Seirei Tsukai no Blade Dance OP
17) nO LimiT by Eclipse ----- Basquash! OP 1
18) spiral by DUSTZ ------ Blood- C OP
19) Retsu no Matataki by JAPAHARI NET ----- Air Master OP
20) Nanairo Biyori by nano.RIPE ------ Non Non Biyori OP
21) Renegade by STERO DIVE FOUNDATION ----- Gangsta OP
22) Hard Knock Days by GENERATIONS from EXILE TRIBE ----- One Piece OP 18
23) Reclimb by ROOKiEz is PUNK'D ----- Yowamushi Pedal OP 1
24) Brand-new World by Shiena Nishizawa ----- Gakusen Toshi Asterisk OP
25) The Other self by GRANRODEO ------ Kuroko no Basket 2nd Season OP 1
26) Sen no Tsubasa by livetune adding Takuro Sugawara ----- Re: Hamatora OP
27) I'm a Believer by SPYAIR ----- Haikyuu!! Second Season OP 1
28) Kyoukai no Kanata by Chihara Minori ----- Kyoukai no Kanata OP
29) Guren no Yumiya by Linked Horizon ----- Shingeki no Kyojin OP 1
30) Ring of Fortune by Eri Sasaki ----- Plastic Memories OP
31) Spirit Inspiration by Nothing's Carved in Stone ----- Zetsuen no Tempest OP 1
32) CORE PRIDE by UVERworld ----- Ao no Exorcist OP 1
33) Yowamushi na Honoo by Dirty Old Men ----- Yowamushi Pedal OP 2
34) Clattanoia by OxT ----- Overlord OP
35) Can Do by GRANRODEO ----- Kuroko no Basket OP 1
36) Extra Magic Hour by AKINO with bless4 ----- Amagi Brilliant Park OP
37) ANGEL by angela ----- Coppelion OP
38) Imagination by SPYAIR ----- Haikyuu!! OP 1
39) killy killy JOKER by Kanon Wakeshima ----- Selector Infected WIXOSS OP
40) Crawl by VELTPUNCH ----- Nabari No Ou OP
41) Tsukkiakari no Michishirube by Steropony ----- Darker than Black: Ryuusei no Gemini OP
42) Makka na Chikai by Fukuyama Yoshiki ----- Busou Renkin OP
43) Breakin' Through by Shuhei Kita ----- Persona: Trinity Soul OP 1
44) Sillhouette by KANA-BOON ----- Naruto: Shippuden OP 16
45) Angelus by Hitomi Shimatani ----- InuYasha OP 6
46) chAngE by miwa ----- Bleah OP 12
47) XTC by Psychic Lover ----- Witchblade OP
48) BLOODY STREAM by Coda ----- Jojo's Bizarre Adventure OP 2
49) Dream of Life by Shohei Itou ----- Bakuman 2nd Season OP
50) This game by Konomi Suzuki ----- No Game No Life OP
51) Honto no Kotoba by Foot Stamp ----- Gokusen OP
52) Kakusei Heroism ~ The Hero without a Name~ by An Cafe ----- Darker than Black OP 2
53) Oath sign by LiSA ----- Fate/Zero OP
54) Shell by Bana ----- Witch Hunter Robin OP
55) Complication by ROOKiEZ is PUNK'D ----- Durarara!! OP 2
56) Rashisa by SUPER BEAVER ----- Barakamon OP
57) Red Fraction by MELL ----- Black Lagoon OP
58) Miiro by AKINO with bless4 ----- Kantai Collection: KanColle OP
59) Junjou Spectra by Zwei ----- Robotics;Notes OP 1
60) IN MY WORLD by ROOKiEX is PUNK'D ----- Ao No Exorcist OP 2
61) daze by Jin ft MARiA from GARNiDELiA -----Mekakucity Actors OP
62) Kuchizuke Diamond by WEAVER ----- Yamada-kun to 7-nin no Majo OP
63) JUST ONE LIFE by SPYAIR -----Samurai Flamenco OP 1
64) Flyers by BRADIO ----- Death Parade OP
65) wimp ft. Lil' Fang by BACK-ON ----- Gundam Build Fighters OP 2
66) X-encounter by Maon  Kurosaki ----- Tokyo Ravens OP 1
67) Dream Star by the Generous -----Skip Beat
68) "Sora ga Aozora de aru Tame ni" by GLAY ----- Diamond no Ace Second Season OP 5

dovakhiin97 : Mine is Cory in the House. It has a really well compiled song, and the animation of the characters are beautiful. Even though they change it every season, that is a good thing. It shows the best and most loved moments of the previous season, but the only theme I hated was season seven's. They changed the music, and it sounded like Jay Jay the Jet Plane's intro (not saying their anime intro is bad) and was terrible. Overall, 9.6/10 for that theme song.

My favorite anime opening of all time is either Fairy Tail Opening 21 or Opening 22. I can't decide between the two of them, they're both awesome.

Earlier, I came across 2 other very dynamic anime openings so I'm adding the openings for Baccano! and Death Parade to my list. I recently finished Baccano! (finally!) and I'm halfway through Death Parade.