For a family dog, even one as intelligent and well-spoken as Brian the Griffins’ pet, he sure has a way with women. On Sunday’s “Family Guy,” Brian hooked up with Lauren Conrad. The star of “The Hills,” who did her own voiceover of the animated-cartoon version of herself (beautiful and SMART), had a one-night stand with Brian after they met in a bar. The episode also featured hilarious mock-monologues by live-action late-night hosts Jimmy Fallon, Jay Leno and Craig Ferguson.