I have a Microsoft Office Keyboard Special Edition (black in color, bundled with the wireless optical intellimouse explorer).
I love that keyboard. It's by far the nicest keyboard I've typed on. Keys are big but not too big (and I've got small hands). Good spacing. Plenty of programmable function keys, scroll wheel, etc. Has an oversized Delete key, and second Backspace and Tab keys in the numeric keypad. The "logout" key is nice, too. I've got it configured to instantly fire-up the password-protected screen saver, so I can step away and secure the machine with one button.
The cordless optical Intellimouse Explorer is OK. Nice shape and feel. Accurate. But when it sits idle for a minute or two, it goes into some kind of power-saving mode, and it takes a bit of a giggle to wake it back up, otherwise it'll miss the first half-second motion and will mistrack. Personally, I prefer my Logitech MX-300 when it comes to mice.