An indecent proposal on 'The Big Bang Theory'

Greetings, BBT fans! Our favorite geeks were back on Thursday night, and at lunch, they were asked to attend a fundraising event ("Tater tots and a party invitation. What a great day!" raved Raj), but first things first, just how do vampires shave after all?

"Well-groomed vampires meet in pairs and shave each other, case closed!" Thanks for that explanation, Sheldon.

We also got some clarity on the difference between the movies "28 Days Later" and "28 Days," which Howard hated. Raj came to Sandy's defense: "Don't bag on Sandra Bullock! You think it makes you look cultured, but you just come off bitter."

Sheldon decided to stick to his guns and refused to attend the event, before Amy Farrah Fowler set him straight over video chat. "Until you manage to upload your intelligence into a self-sustaining, orbiting satellite equipped with high-speed internet and a cloaking device, you will be dependent on the human race," she said.

Amy frightened Sheldon with the possibility that some of that money could go to the arts: "Oh the humanities!"

Meanwhile at the fundraiser, Leonard ran into "Arrested Development's" Jessica Walter as a top donor, who soon suggested a little, um, favor in exchange.

When all was said and done, Leonard did the deed, though she would have donated the money anyway. As Sheldon put it, "I'm so proud of you! You sold yourself out like a common streetwalker!"

I have to say, overall, this was a weaker episode for "Big Bang." Definitely looking forward to next week's "Cohabitation Formulation," with the return of Raj's sister, who might end up continuing her on-again, off-again fling with Leonard. Boy, he sure gets around these days.

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