I have sometimes and I'm only on Celexa (and a very low dose - 20mg).

Not often at ALL - and my hands are pretty steady usually - but the other day I was writing and my hand just jumped a few inches.

When I started it I found my leg would sometimes jump in bed. That's stopped now.

Not very helpful, sorry, but it does seem to be a lil side effect that for many ppl goes away. I haven't noticed it in weeks till the other day. Plus I was really cold when my hand jumped, so that may have been part of it.

good luck workin it out.