I use something like this on Linux, it's called tilda (there are also various similar implementations). It's both awesome and a curse to me. I have it bound to alt+kp_enter and I always keep an irssi/irc session running on it. Every time I need to chat with my friends on our IRC channels I just hit alt+kp_enter and it opens, it's a curse because now I'm always chatting and doing other things while I work, which detracts a lot from my productivity.<p>Still, really awesome! Nice to be able to share something like this with our windows friends.