The evening started with Stevie Wonder singing Happy Birthday to one of the judges, and ended with a dramatic "save!"

Stevie Wonder made an appearance on American Idol last night, initially singing with the contestants, but then lead everyone in a Birthday song for Steven Tyler who turns 63 tomorrow:

Then, another surprise hit the stage:

Sugarland stopped by with "Stuck Like Glue:"

Jennifer Hudson returned to Idol last night with a new song:

Later, we found out Thia, Stefano and Casey were in the bottom three this week, but it was Casey who got the least votes. You'll have to watch to see what happened next: