Quite nice - far better than the awful plane ident they use all the time which looks as if it is just a toy plane stuck to the camera with random flashing hexagons with "five" in them!
There is however a new "five arts" ident about at the minute, not got captures but it's rather good compared to the last one. Plus theres also now a "five wild" sting before the nature programmes.
I think the best five ident has got to be the neon lights in the puddle one. It's really simple yet looks really good. Not too keen on the rest though.
I captured the Ultrasound ident once, not sure if I've still got it.
Also caught that Air Race/Plane ident which admittedly is quite naff.
The idents with the puddle, and the slo-mo bullet are quite nice.
There was an odd variant of a five movies ident I caught once, where a couple start off on the bench before the scenery changed to a load of skyscrapers, plus music changed key completely; whereas before the scenery had been amongst a night time setting with music still in-key. Don't know if both versions still exist, but it was certainly an edit of a previous ident.