The Jackass series is gross out humour that is funny because it's stupid and people get hurt. These guys have been doing this thing for ten years now. 3 films later, the stuff they do is still funny. Jackass 3.5 is pretty exactly what Jackass 2.5 tried to be. The crew shot so much footage, that it could essentially be another movie. So instead of adding the scenes for special features, they made 2.5 and now 3.5.
If you are a bit apprehensive about this one because of the lackluster 2.5, don't be. Jackass 3.5 is hilarious and maybe even funnier than Jackass 3D. They have a better flow and format down for this addition and it shows. Everything runs smoother, it's not horribly intercut every time with interviews that we don't care about. Every so often it will cut to someone explaining something, but 2.5 was interview overkill. Here they have significantly cut it back and let the stunts do the talking.
3.5 showcases a lot more male nudity then the other entries, I think you see Pontius and his penis 4 times...in super slow motion no less. Using the state of the art Phantom camera, that big productions like Sherlock Holmes used, we get to see male parts move around in slow motion. Hilarious and disturbing at the same time.
This is a recommendation for any fan of the series. The DVD has some nice features as well, you get a look at the initial creation of the show, how half-assed the stunts were and how young everyone is. It's nostalgic.
In short, Jackass 3.5 is funny and a big step up from the disappointing 2.5, which definitely should have been left for deleted scenes. Jackass 3.5 is worth the viewing.