The West Wing

I got to play a Secret Service agent in a number of episodes of The West Wing, most notably the season one assassination attempt cliffhanger "What Kind of Day Has it Been." The high point of the night for me was shoving Martin Sheen in the presidential limo, and having my fellow Secret Service agent accidentally run over co-star Jorja Fox's right leg, sending her to the hospital in real life.

From the official West Wing episode guide.

"Stop poking the President with that flag, ma'am."