[video=youtube;OUxG_reG1QU]http://www.youtube.com/watch?v=OUxG_reG1QU[/video]
[video=youtube;-4ex1I4SFZs]http://www.youtube.com/watch?v=-4ex1I4SFZs[/video]
[video=youtube;X7jW48fWipE]http://www.youtube.com/watch?v=X7jW48fWipE[/video]
First on I didn't like so much, second is alright, but the last one is perfect. I could see myself fighting a boss to that.
Last one is Faptastic
There's a whole album of sonic remixes in Breakbit's "In The Zone"
But the album seems unavailable ATM. In the meantime, I might suggest listening to the Sonic Rush soundtrack.
--- Update ---
http://www.breakbitmusic.com/release/inthezone/
Found it!