Yahoo! I'm finished with my master bathroom overhaul.
Aside from adding a little glass shelf, and adding the lath paneling to the shower stall, everything is pretty much exactly the same, just completely refurbished.
The walls are Benjamin Moore, Silver Crest in eggshell.
I chose a satin finish spar varnish to seal the teak. It is slightly less shiny than the previous finish which is my preference. I find that if a wood finish is too glossy, it looks super plastic-y and dated (in a bad way) -like those burl tree stump coffee tables with the poured on finish from the 70's and 80's. Super glossy on natural wood is only good if it is a french polish, which is a different story altogether.
I did a lot of work on the sink surround to remove some dings and water marks. It's not flawless but still pretty good. You can see that post here.
The shelf is from Restoration Hardware, the sutton line, I believe.
The previous finish lasted about 5 years before it broke down. I'm trying to be more careful now with the new finish, like not leaving bars of soap sitting on the wood overnight and such. I know wood is not the most practical for a bathroom, but I do like the way it looks so I guess it's worth it for me.