I have a new ICQ client, which is fantastically better than the official one. Its only fault is its annoyingly cheerful icon, a cheery "Hi" in a word balloon (which is at least aqua coloured). It does a whole bunch of translucent funky stuff, it displays related messages in the same window, it only bounces once in the Dock, it's just great.
Oh, yes, another problem: it has a button in the button bar which lets you insert smileys. It's supposed to be a smiley face and a pencil, but it instead looks like a bright yellow head with a huge nose.