We passed by the Truc Lam Buddhist Temple at Wilson and Ashland today, and it looks like they're getting ready for their "Happy Birthday Buddha" festival any day now (click on the photo for a detailed look at the decorations). We've never been there, but have heard raves about it from other Uptowners. If anyone has any information and specifics on the festivities this year, we'd love for you to post it in the comments. (We found a website, but our Vietnamese is, um, a little rusty.)
We came across this video (by http://www.yochicago.com/) from a previous year's celebration: impressive!