For me Skulls are the best tri exercise, but as people have said, hard on the elbows when the weight get high. @spartacus; I don't see a huge difference between skulls and a lot of other tri extension movements aside from the position you might be sitting/standing in. The movement is essentially the same.
French press?
Speaking of which, tried this?
http://firstpresscoffee.com/
I like cable French presses personally.