Spoiler Warning: Medium
This episode kind of sums up my feelings on the entire season. Not really deep, but some nice sentimental moments and overall a lot of fun.
Watching the Doctor trying to pass himself off as a normal guy and failing miserably makes for some great comedy. As Rich and I have discussed with each other in the comments, Matt Smith's strength in his performance as the Doctor is his ability to be off the wall, and this episode plays very strongly to that.
And another awesome montage of earlier Doctors. Fanboy heaven!!!
Also, notice that in the window of this picture, Craig has a Teenage Mutant Ninja Turtle!