Found this on Youtube and thought I have to need to share this. This is New Direction's Performance in the 2010 Midwest Show Choir Championship on Glee! Too bad they didn't even place (Oooops! spoiler...).
The songs featured in this "Epic" Journey medley (as Cory Monteith has said) are Faithfully, a duet with Finchel (Finn and Rachel), a mash-up of Any Way You Want It and Lovin' Touchin' Squezin, and of course Don't Stop Believin' which was 10 times better than their early version.
But wait, there's more!
^^This is Mr.Schue and Puck singing Over the Rainbow with a ukelele!
note: photos are screen captures from Youtube.