The Friends cast will be there for each other today when they reunite to watch the sitcom's big finale. According to the New York Post, Jennifer Aniston, Courteney Cox, Lisa Kudrow, Matt LeBlanc, Matthew Perry and David Schwimmer will attend a private screening of the episode on the Warner Bros. lot at 4 pm/PST. Afterwards, they'll join Jay Leno to tape a special edition of The Tonight Show on the set of Central Perk. Meanwhile, Hollywood's major film studios are getting in on the Friends frenzy by purchasing the bulk of the pricey ad space during tonight's finale. Among the summer blockbusters getting airtime this evening: Van Helsing, Spider-Man 2, The Day After Tomorrow, Shrek 2 and The Stepford Wives.