What an incredible rendition of Lady Gaga's Poker Face! You simply must listen to Rachel and Shelby sing a duet of this classic, courtesy of the 5/25/10 episode of Glee.
Listen to Tina's first solo on Glee. That show may need to find more work for Jenna Ushkowitz, as she does a great job here with a Cyndi Lauper classic.