Don't miss LeAnn Rimes on "The Ellen Degeneres Show" today (check local listings for times). Keith Urban will perform his current single, "You'll Think Of Me," on NBC's "The Tonight Show with Jay Leno" tomorrow, plus he'll perform the song on "The Sharon Osbourne Show" for an episode scheduled to air on March 12. And this Friday (Jan. 30), Dierks Bentley will be the "celebrity courtyard correspondent" for "On-Air With Ryan Seacrest" (for information on channels and show times, go to ryanonair.com. )