Reps. John Culberson, R-Texas, and Tim Ryan, D-Ohio, might be the most prominent Twitter users on Capitol Hill, but they aren't the only lawmakers utilizing the innovative social media platform to communicate with constituents. We uncovered a few other famous political faces who have posted short missives online -- some more recently and regularly than others (more screenshots after the jump.)

According to the Sunlight Foundation, other lawmakers appear to have Twitter accounts but it was unclear whether they actually update themselves -- like Rep. George Miller, D-Calif., and Sen. Jim DeMint, R-S.C. The foundation's Let Our Congress Tweet campaign has received over 600 petitions since its launch a few weeks ago.