You’re never too old to have a themed birthday party—not even if you spend most of your week in a suit and tie under fluorescent lights in Midtown. You can have yours in one of the 18 themed karaoke rooms at RPM Underground, whether you want Marvel madness in the Avengers room or LA sleaze in the Sunset Blvd. room. If you’re not here for a private party, there’s plenty going on around the huge venue, where you'll find live comedy, an in-house vinyl shop, and two bars that often have drink specials going on.