Cheers! Famous Faces Toast Actor Nathan Fillion's Birthday

As the Castle star rings in his 43rd year, pals like Joel McHale and yes, Barbra Streisand, turn out to celebrate


Guests – including Community's Joel McHale and Jim Rash – kick back with Fillion at the bash, which benefited non-profit Kusewera; the birthday boy declined gifts, but let guests donate to the organization throughout the night.