So don’t expect “Pretty Woman.” Transpiring in one smoggy day, “Full Frontal” (written by Coleman Hough) peeks over the shoulders of a gaggle of neurotic, creative L.A. types as they search for love, connections, success or (it sometimes seems) their lines. Catherine Keener is a bitchy corporate exec married to Hyde Pierce’s magazine writer while having an affair with an actor (Blair Underwood) who is playing an actor about to have an affair with a journalist (Roberts) in the movie within a movie. Nicky Katt plays a stage actor playing Hitler in a dreadful show whose director (Enrico Colantoni) is carrying on a chat-room romance with Keener’s masseuse sister (Mary McCormack). They all come together at the party of the movie within the movie’s producer (Duchovny). Alternatingly hilarious and annoying, incisive and self-indulgent, “Full Frontal” swings uneasily between hip skit humor and cinema verite. Soderbergh’s playfully experimental spirit should be saluted, even if the end product looks like it was more fun to make than it is to watch.