Your story on the foot in mouth reminds me of the first molt I saw of my C.Huahini. He did the same thing. It freaked me out COMPLETELY!!! It really looked like he was dying or something. There was a cricket in his enclosure too so I thought he went mental and started eating himself. Turns out this is perfectly normal behaviour, specially after a fresh molting. Think about it this way, when you wake up in the morning, don't you brush your teeth and style your hair? Apparently T's are more like us than we know.
The dance thing is also something seen accross the sp.'s. And yes, they do web after the kill. It's for marking their territory and incase the cricket fals out of their mouths, they can't get away as the webbing will slow their escape. Also, T's will lay fine threads of webbing on the substrate to assist in picking up vibrations. This help them to locate prey easier. After a kill, they will repair the webbing destroyed while catching prey.
The water thing is awesome to witness. I can't wait for my Roseas to get that size. Just always beware of the drowning thing. Rather put a few pebbles in the water to [revent drowing. Plus, your T's will more often than not start cruising over the pebbles which is equally awesome to watch...

Marula wrote:

Awesome pics, Gemini! I'm sure they groom themselves.

This one (is that a S. calceatum, Gemini?) is clearly cleaning the pads under its "feet". It must be vital for arboreals to keep those feet clean to retain a good hold onto the surface they're sitting on.

Thanks Marula! Its actually a Psalmopoeus pulcher..

Very interesting. My G.pulchripes, N.vulpinus, N.chromatus and my B.emelia all do the little dance of joy' when they catch something to eat.

I watched my P.cambridgei carrying his skin (exuvium?) around the tank the other day. He hardly ever shows himself but there he was climbing around and eventually dropped in a corner. Great to be able to watch him for a few moments.

They are definately grooming themselves and basically wet their legs to clean parts of their bodies they can only reach with their legs, much like a cat

I did some closer inspection on the MM B vagans I got from Scarab which has completed it's mating duties and basically waiting to die (Sad, I know). but I noticed the the bottom 2 spinnerets are red and not covered in hair compared to some pictures I found on the net to compare it.
It usually grooms these spinnerets 90% of the time.

Synergy, that's pretty interesting. Any chance for pics?