Don't forget to budget some money in for a rack and maybe some lights depending on when you'll be commuting. You could also buy panniers and bicycle specific clothing, but a rack and some bungee cords so you can strap whatever you're taking to work on it are pretty much the bare minimum (unless you want to just use a backpack - I do, but then I have to deal with a very sweaty back when I get to work, it's all a tradeoff).
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"