During my honestly wonderful years of homeschool, I remember seeing two commercials that are literally not on the internet in any capacity (except one): "Sonic Riders: Zero Gravity" and "Nights: Journey Of Dreams". Here's what I absolutely know about them: 

"Sonic Riders: Zero Gravity": 

It aired on CN after Courage the cowardly dog. I don't know the episode as it just showed the CGI ending sequence were Courage takes a bow. It showed the interstitial and then cut to break. It aired immediately(?) afterwards. The commercial was like this: 

Sonic was in his new get-up riding his extreme gear. This part sticks out to me the most: he rides his extreme gear in a tube like place with orange skies and arches with grey floors. The announcer says some about zero gravity and then cuts to show the box-art and game consoles (PS2 and Wii). 


"Nights Journey Of Dreams": 
Now, I can find this one online, but I want a higher quality if possible. Here's the commercial in question: https://www.youtube.com/watch?v=_RnVCYRFQLw

Thank you. 

If location helps, I saw the Zero Gravity commercial in Huntersville, NC, USA. 

I do remember playing a little bit of Sonic Riders at a friend's house, since he was super into sonic. Problem was that I was really bad at the game. I don't remember seeing any commercials for it though, since I was never really into watching very much television. It was a good game though.

As for the second one, I did not actually recognize the name at all after reading the post, but once I looked up the video and watched the trailer I remembered it. I think I actually saw that specific trailer. I always did think the game looked pretty fun, but I never followed through on that notion and so I never got to play that one, unfortunately.