The best selling game of all time is Addams Family, it's hard to argue that shouldn't be one of your 5. I also personally like the visual appeal and humor or TOTAN and CFTBL. Finally, I'd want a game with really deep ruleset and challenge - TZ seems to have this. If you find more room, however, having something light-hearted like White Water would round it out nicely. As you can tell, I'm a fan of B/W but I really enjoyed Family Guy the last time I played it. Best of luck, thanks for letting us all fantasize about having $20k to spend on pins for a minute..