I met Maura Tierney (from ER, Liar Liar, NewsRadio, and more) at the end of March in Dublin following her last performance in the play "God of Carnage" at the Gate Theatre. A group of a dozen or so was with me and she kindly took photos with everyone and signed everything we wanted.

For me, she signed an ER DVD, a photo, and a playbill. We were also able to pre-request that she and the rest of the cast (Owen Roe, Ardal O'Hanlon and Donna Dent) sign a play poster. Here's a photo of what she signed for me, and a photo of her signing my playbill (I'm so pale next to her, lol):

http://img215.imageshack.us/img215/9767/img5200r.jpg
http://img39.imageshack.us/img39/8973/maurasigning.png