Is there any desktop notifier application for bitcoin prices? There's a nice C2DM push based notifier for android but I'd like to know if there is one for the desktop environment, ideally linux? 

Does anyone know if one exists?
If you're looking for a solution which will run on linux, then there's always a the wget command:

wget -q -O - https://mtgox.com/code/ticker.php


You can run it in a loop in a terminal :)

Under the xfce desktop environment you could use the genmon panel plugin and feed it Mt. Gox's last trade data. Speaking of which, I think I'll do that myself. :)