Having Two and a Half Men air before this will certainly help the ratings, but it also exposed how much better the show is than Chuck Lorre's newer series.
Christine Baranski did an excellent job as Leonard's mother, and her exchanges were great, but everything else about this episode just felt, sort of there. There was no need to have the "two friends, let's pretend their gay subplot with Kuthrapali and Wolowitz. We clearly know they are not, and such a generic concept is beneath this show.
I did laugh a lot though, so I cannot discount that, but not the best half hour of the year by a long shot.