Professor Rex set a lifetime goal to perform the song "It Takes Two" by Rob Base & DJ EZ Rock in all 50 states and the District of Columbia. He currently stands at 12 of 52 (including D.C. & Puerto Rico).
- California (at karaoke night at Netroots Nation in San Jose) 
- District of Columbia (at multiple locations, too many times to count) 
- Florida (at multiple locations in Tallahassee, too many times to count) 
- Georgia (at an Applebee's in Atlanta) 
- Hawaii (an the In Between in Waikiki) 
- Maryland (at the Big Play in College Park) 
- Minnesota (at karaoke night at Netroots Nation in Minneapolis) 
- Pennsylvania (at Yakatori Boy in Philadelphia) 
- Puerto Rico 
- Tennessee 
- Virginia (at Rock It Grill in Alexandria) 
- Washington (at numerous locations in Seattle, including Club Hula Hula) 
