If you like having a nice clicky keyboard, you could look at Cherry MX Blue switches. Alongside a myriad of mechanical switch types, there are also quite a few manufacturers who make them now as well.

Is your Cherry MX Blue board not driving your coworkers crazy ... typewriters have been converted into keyboards with the help of some switches and an ATMega. [Russell]’s mechanical keyboard ...

They are very popular for gaming keyboards, though. The most popular clicky switches are the Cherry MX Blue and the Gateron ...