I love the idea! Can't wait for it to be open source too. About those people who want a Menubar app that's just a menubar app I have taken the best parts of the BitTicker project on github, mentioned above and built a binary here if you want to try out. When I learn git and have time I will put the source up there.
Pre-Built Binary of BitTicker with wallet calculations and total of those calculations.
http://www.sendspace.com/file/t8l2xcYou can get the pretty much same thing at the github repo below but without totals, no biggie so get it from here if your worried and add it later on.
github.com/trishume/BitTicker
Source needs one change to be functional - The mtgox url in source of the repo above needs to be changed to the new style:
http://data.mtgox.com/api/0/data/ticker.php - that was one of the reasons I posted the pre-built so people could try the app.
https://a248.e.akamai.net/camo.github.com/098d49d5376d76164921684f9c8879a583eb3bdf/687474703a2f2f692e696d6775722e636f6d2f32567848522e706e67Posted version above has totals too of those values entered.
Sorry to post it here but someone mentioned it above and I thought others should know about the new features.
I am going to contact you soon seventoes as I would like to collaborate on something if your interested, again, sorry to step on toes! Will delete if you want. Just wanted to let others know about the new features of bitticker branches... + kind of get some interest in developing my btc menubar app. Much different than these. Need a dev like you though or someone as skilled.