S/D: White Elephant Gifts

Really surprised this hasn't been done already. We have a white elephant gift exchange in the office next week. What are the best sort of white elephant gifts? What is generally successful and/or hilarious? What falls flat? Let's hear your best ideas, thoughts, memories and so forth.

Lots of good ideas here - http://www.regretsy.com/

good:

a glossy headshot of yourself
giant light-up jesus
condoms
half-eaten boxes of food

last weekend's white elephant party, like 30 attendee couples:

guy1: *opens twilight blanky/pj set* uhh, ok. what? ok.

*party larfs*

guy1's wife: oh, soooo hot. now we can roleplay.

*party larfs, then quiet*

woman2: *looks at her own husband* WHAT'S ROLEPLAYING?

*hoots, then quiet*

woman2's husband: *bright red* erm, dungeons and dragons?

woman2: oh, haha. who does THAT?