I found this auction linked to on another forum. It is an auction for 22 full sets of games for all sega, nintendo, and NEC systems for over $1million. Among the sets is a supposed full set of Dreamcast games.

Looks like I can't just link the DC pics, here is the auction with pics for your amusement.

BIGGEST COLLECTION EVER? 22 SEGA / NINTENDO / PC ENGINE FULLSETS,FACTORY SEALED! | eBay