@Madame Strobonoid
Those cracker demo's were often cooler than the game they cracked!
It were often nice cover-version of pophits but I recon there must be C64-versions of discosongs we like here at R4R... I've still got loads of 5,25inch-disks with C64-games but my old C64 is very hard to revive again I'm afraid so I have to it with the youtube-clips which are also fun, right?
edit:
@e-control
You found some nice cracker-intro's...some of them really rock!
Test Drive 2: The Duel
Cool intro.
[youtube]http://www.youtube.com/watch?v=xSvpmi79 … p;index=60[/youtube]
The Last V8: what about those samples? 
[youtube]http://www.youtube.com/watch?v=iBi6lboO … p;index=12[/youtube]
Streets Of Rage (my favourite game on Sega Megadrive): the intro
[youtube]http://www.youtube.com/watch?v=hikFCwduCIQ[/youtube]
and it had a nice endsequence too (skip the first 40 seconds)
[youtube]http://www.youtube.com/watch?v=3HZIoQlr1z0[/youtube]
Toy Bizarre. I like the short intromusic. The game was (is) also nice to play.
[youtube]http://www.youtube.com/watch?v=q2o4IGHi4Ww[/youtube]
"Are you loving?"