While you can use utilities like BootPicker or rEFIt to quickly select a Boot Camp partition at startup, Flipside hopes to take the pain out of booting into Windows (no, it doesn't make Windows pretty, simple, or virus free -- that's for version 2.0). Flipside automatically finds your Windows partition on your Mac and boots you into it -- all without changing your startup disk settings. If you're in a hurry to reboot into Windows, then you can have Flipside force-quit your open Mac applications and instantly reboot (not recommended, but could be handy).
This tool is definitely useful if you find yourself booting into Windows regularly. Best part of this application? It's free -- however, donations are accepted. You can download it today from Barraford Software.