UBC's Panhel abolished theme parties a few years ago (1997 rush).  Our panhel got rid of them for a few reasons:  NPC wants to see them gone eventually; to much extra work/money/stress for Rush, etc.  I have only ever experienced theme parties as a rushee and thought they were a lot of fun.  I'm curious to know what other opinions are out there regarding abolishing theme parties.   
[This message has been edited by Siobhan (edited June 21, 2000).]