The ending of that video killed me. Seriously, Mega Man X in Donkey Kong Country and the Eiffel Tower was the video that I never knew I wanted. Well, my favorites would have to be every Sonic 06 glitch in the world, and the Mew glitch and Missingno glitch from Pokémon. 

(You can go to space in Sonic 06! There's no use!)

(Master Balls! And Rare Candy!)

I never played it, but I was watching my friend play one of the Gran Turismo games, and he was going so fast, his car flipped on it's front, but he was still able to control it! And he won the race! I laughed so much my face hurt. XD

the dancing goron Glitch from legend of Zelda Twilight princess

-The guy in Zelda II who says "I am error" always makes me laugh.

-The Minus World in Super Mario Bros is always fun.

-Any of the multitude of glitches in GTA III, Vice City and San Andreas are great to play around with.

Pokémon glitches like the glitch of get the tree starters on crystal or the unown sounds that make me so scared but for me is really cool glitches

As a TASer, bugs and glitches are important.

My favorite one is the rollover glitch in Phantasy Star IV. Until he reaches level 5, Chaz can hold a Shadow Sword and have 254 dexterity and 255 mentality (?). This way, although he can only cast it three times, his tsu magic can do VERY serious damage. In my most recent speedrun, I was able to hit Juza with 500 pts, 450 to Zio, Gy-Laguia and Lashiec, 700 to Dark Force I and 600 to Xe-La-Soul. And should the fight last too long, he ALWAYS hits critically for 30-40 points.

Another good one involves battle mechanics in Breath of Fire III. Since battles happen on the same screen you're walking, taking a defensive stance can make you avoid battles altogether - I only had one battle in the flood cave on my way to meet Gaist; walking alongside walls also seems to delay battles. Inside Angel Tower (at the end of Ryu's childhood), using a normal formation can make you warp on top of the block leading you to the stairs leading you to your confrontation with Garr, skipping a good 10-20 minutes of gameplay.

I don't know if anyone else has ever had this particular glitch, but I did with my first cartridge of Kingdom Hearts: Chain of Memories, and it...was probably the only reason I was able to beat the game, as trying to play normally WIPED MY SAVE FILE.

Just before the Riku Replica battle, if I entered RR's battle room and then immediately exited it, the entire battle was skipped and the game considered it beaten. I had the cards he dropped added to my deck. Without doing this, my cartridge was unbeatable, as entering the Riku Replica fight would cause the game to crash. Rebooting wiped my save file. Found this out the hard way. :/

My favorite glitch in video gaming history would have to be the missingno glitch from pokemon red and blue. In my opinion, there's nothing else quite like it, and honestly I think it's hilarious. I didn't find out about the glitch until years after the games were released. Needless to say, once I found out it existed, I couldn't get enough of it.

Nice, there's a glitch in your post that made the layout extend farther Or maybe that's  my layout's fault... I should take a look.

Anyway, my favorite video game bugs and glitches are:

-The BLJ glitch in Super Mario 64
-The minus world in Super Mario Bros.
-The toy/fruit and ghosteater pellet fusion glitch in Jr. Pac-Man (Atari 2600 version)

The BLJ glitch is pretty funny (especially the sound. Yayayayayayahoo!) The minus world glitch is fun to try, and the fusion glitch is a game ruiner but it's funny!

There was glitch that happened to me in WWE 2k15 where Santino got stuck to ring apron.  Another in the same game was where I fell off the ladder and went through the ring.

item duplication