I thought it'd be a cool idea to compile a list of the best things for ringtones.

My current favorites:

The Metal Gear Solid Codec beep, in conjunction with vibrate..

Skatchamagowsa!, from Greg the Bunny. For some strange reason, I just find it hilarious.

The Final Fantasy 2 Main Theme (sorry this ones a Midi, not an mp3.)..



So many more, I've yet to go through The Video Game Music Archive and find more tunes like Tetris, but this should be enough to get us started.