Skipping to the bottom of this thread as I've only seen the first two episodes of season five (they were on last night.
Pretty good. The case in the second episode (five people with trasnplants from the same donor, four of them die, SAVE THE FINAL ONE) was more interesting. Thirteen is still fit as fuck. Don't get why she, Taub and Kautner aren't in the opening credits whereas Chase and Cameron are despite doing nothing this season and it seeming, from these two episodes anyway, that it'll be the same this year. House will obviously end up friends with Wilson again in a few episodes so maybe they should just skip to that.
The PI character was quite entertaining and I read that there were plans to give him a spin-off show?
Lots of funny sharp dialogue...sometimes though it moves SO fast it's hard to take in what they're actually saying and if all the leaps of logic that've just been made in the last eight seconds actually made sense. But I'll assume they do.