Simple Elegant "Landing Page" Plugin

Here’s what I’m looking to accomplish and can’t seem to find anything in WP land that may help…so far.

I have 4 major projects that I’m working on that all currently have their own sites (that’s fine). However, I’d like to be able to direct people (in my email sig, business cards, etc) to ONE URL. When the user reaches that URL the will be given 4 simple choices. I’m thinking 4 boxes, 4 circles, 4 rectangles, seriously anything elegant. Users will be able to choose the project they came there looking for or head in another direction if they choose.

Does anyone have any insight on this? Any of the splash page or landing page plugins that I’ve downloaded and played with don’t see to have this functionality.

I’m willing to build it from something more bare bones myself also, if someone could please point me in the right direction.

Thank you in advance.
Bianca