Star Trek Convention 2009!

It's been more than 20 years since William "Captain Kirk" Shatner told a roomful of Trekkies to "get a life" on Saturday Night Live, but Star Trek conventions are still going strong.

Leonard Nimoy and Shatner himself will be among more than 70 special guests at the official convention in the Las Vegas Hilton Hotel this summer.

Most guest celebrities will take fans' questions while on stage, but the convention Web site has a warning: Asking for hugs, telling stars you love them, giving gifts and telling long personal stories while other Trekkies patiently wait to ask a question is "quite self-centered" and unacceptable in this universe.