I don't know whether I'm supposed to recognize that logo or not, but it would be fun to have it auto-customizable to fit in whomsoever's logo(s) you choose.

My suggestions would be:
-retrospectively: the failed Sprint/WorldCom merger (whose collapse turned my 401(k) into a 0.401(k)...);
-Worldcom, just because...
-prospectively: the impending Sprint/Nextel merger (could use the "doomed-to-fail business model" mods for that one)

I'm with you...just wish the t-shirt came in 3X...