The return of Leonard's mother on last night's "Big Bang Theory" wasn't quite as strong as her original appearance last year, I thought. Inherently funny as Christine Baranski is, and as good as she is with Jim Parsons, it felt a bit one-note - or, at least, like it was repeating the same note we heard last year. Funny in spots, particularly in the car ride back from the airport, but not one of the season's best. What did everybody else think?