Matthew Morrison stopped by Watch What Happens Live last night, and revealed the one thing ever crazed Glee fan has no doubt been dying to know -- his favorite Glee performance.

Morrison told host Andy Cohen that his personal fave is the "Singing In the Rain/Umbrella" mashup he did with Gwyneth Paltrow.

Gwyn is gonna be so jazzed. Or, you know, is paying him to say that.

Check out Morrison's interview above, and the "Singing In the Rain/Umbrella" mashup here.