It's called Ri-Ra, and I'm shocked it's open -- it looked like they were still mid-construction last week! I had dinner at Green Papaya last Tuesday, and it's directly across the street. My fingers are crossed for you that it stays decent and doesn't fall into suburban Irish Bar hell.
Apparently Ri-Ra is a chain, here's info from the Washington Post:
"As for Ri-Ra, well, it's a chain, with branches in Portland, Raleigh and Atlantic City, among others. I'm sure it's nice and all, but it's a chain Irish Pub. I haven't been yet, but I heard it will open this weekend or next. (It's in Bethesda, on Elm Street across from Cafe Deluxe.) -- Fritz"