Concierge.com's insider take:

For years, a show only survived in Vegas if it involved (a) a magician, (b) an impersonator, or (c) Cirque du Soleil. But now, hits from Broadway often settle in for an extended run on the Strip. The current hot ticket is Jersey Boys, a jukebox musical at the Palazzo about Frankie Valli and the Four Seasons (866-807-4697; www.jerseyboysinfo.com/vegas; dark Wednesdays). When Caesars built the gigantic Colosseum venue for Celine Dion, we called it "Celine's retirement plan." Our bet paid off, and now she's out—currently Cher is playing a long-term run, with any dark nights snatched up by Bette Midler or Jerry Seinfeld (www.caesarspalace.com). Barry Manilow is another performer who's turned his greatest hits into a Vegas retirement plan—only we bet he's here to stay. Manilow ladles out the schmaltz six or so nights per month at the Las Vegas Hilton (3000 Paradise Rd.; 800-222-5361; www.lvhilton.com). Those looking for magic and caustic commentary will love Penn & Teller—the duo who blend death-defying magic with F-bomb-ridden comedy—at Rio All-Suite. Watch them stop bullets with their teeth while making fun of other performers on the Strip, or throw a bunny through a wood chipper while bashing organized religion (3700 W. Flamingo Rd.; 702-777-7776; www.riolasvegas.com; dark Thursdays and Fridays).