A friend emailed me a link to this article from Haaretz: Street Tongue, the Hebrew they Never Taught You. It has a list of lots of common Hebrew slang (at least it is common for Israelis – this is the type of stuff they do not teach you at day school or pre-aliyah ulpan) that could be very useful reference for a new oleh.
(Technical note: you may have to change the page encoding in your browser to Hebrew to get the hebrew here to display properly. In Firefox you can do this through View –> Character Encoding –> (Mote –> Middle Eastern –> ) Hebrew. In Internet Explorer you can do this through View –> Encoding –> More –> Hebrew. If that doesn’t work, just use the English as a transliterated text for the proper pronunciations)