High Note - Glee's "The Substitue" Ep: Singin' in the Rain / Umbrella

I thought Gwyneth Paltrow was an odd choice for guest starring on Glee.  Then I was surprised by how many numbers she sang.  Next I actually found her likable (I'm not really a fan of her work besides Royal Tenenbaums).  Finally, I was impressed with the dance number and wondered why no one had thought of doing a mashup of these two songs before.

Looks like the idea occurred to Jamie Cullum last year, but it's not nearly as good or as catchy.