I have done a lot of philanthropies and here are my 3 favorite...(not including my own house's, because that wouldnt be fair)
I REALLY enjoy the Alpha Delta Pi Kickball Blast at Indiana University. It's near the end of the school year so the weather is great and its just a time to wind down and have fun with friends that you wont be seeing next year
I also really enjoyed the SDT Karaoke event. Sure the judges were a little biased, but seeing people make total asses of themselves for charity is the best!
XP2k