tried to do "the claw" with a swedish keyboard and came up with this: "THE NOSE POKING SWEDE" (since u also need your right hand index finger)

shft+ctrl+alt+´

the last key is the one on the righthand side of the questionmark. this the same as ctrl+clicking on the rgb in the channels panel.

ooh and also: ctrl+alt+1 selects the red channel. ctrl+alt+2 green and ctrl+alt+3 blue.

if you want to see the channels one by one: ctrl+1 for red... bla bla etc. to get back to the original rgb view: shft+ctrl+´

one last thing, someone had trouble changing brush sizes, try this. might not work for other than swe...
1. choose brush
2. hit the < key once (the key between shft and z)
3. change brush size with , and .
4. does not work with the clone brush though, dunno how to do it.

all this should work on a nor-keyboard as they are almost identical. hope it works out, ciao.