Hollywood Boulevard came down with a case of hump-night fever last Wednesday as some major TV events caused weekend-style traffic, much of which was of the foot variety: Kodak Theater was enveloped by the chaos of American Idols finale, and across the street, Mickey and Goofy took the night off at El Capitan, where HBO celebrated the new season of the Tinseltown-insider comedy Entourage. Some blocks down, the pink-lit eatery Geisha House, from the Dolce dudes, marked the debut of pal Ashton Kutchers new reality show, Beauty and the Geek (in which smart dorks try to win the hearts of bimbo models... hey, wasnt that called Average Joe?). Ultimately, everyone ended up at the serene-looking but slammin new club Mood, where promoters Josh Richman and Hartwell (of party superpowers the Alliance) throw the new weekly called Good Mood. The night, which features exotic décor and DJ Samantha Ronson spinning spirited rock/hip-hop mixes, obviously has a feng shui the celebs are digging in just four weeks, its attracted every A-list alpha from Lindsay Lohan to Jay-Z. When we popped in, the early eve was hosted by the new beach mag Salt, though things quickly went from sea-themed to Seacrest as the Idol host made his way from up the street along with Entourages Jeremy Piven, Ashlee Simpson, The O.C.s Rachel Bilson, like, all of the Wayans brothers, and way too many more to fit into this skinny column. Needless to say, Wednesday aint the easiest night to get in, but here are four helpful hints: Be early, be a girl, be beguiling and be guyless. Downtown has been rivaling the wood for most gregarious gatherings lately, and now that Little Radio has moved its headquarters to a loft in an unsketchy area near the outskirts of the civic center, looks like well all be heading east more often. On Saturday, the renegade Internet music station marked its move with an intimate show from Black Rebel Motorcycle Club, who unveiled brand-new tunes from their upcoming RCA release. With only 200 tix sold the day before at Sea Level Records, the word-of-mouth event was unexpect-edly spacious we could see the band from the back of the room, even with all the big shaggy dos in the house. (We recognized two: video director Charles Mehling and drummer boy Bobby Alt.) Little Radio co-creator Dave Conway told us these shindigs will be held on a monthly basis and streamed live on the station. Youll have to wait till July to hear BRMCs recorded set due to music-leak concerns, but we can reveal a couple of things about the new stuff right here: Its bluesier, bouncier and (gasp!) blissfully upbeat. We cant say wholl be next to rock the space, but expect em to be equally big-time. Little Radios Web site and MySpace page should offer clues in the coming weeks.