In case you were busy paying attention to the living and missed the news, Tupac Shakur was the latest dead celebrity to be digitally reincarnated. The reaction—from thrilled to queasy—at the Coachella festival may call for a repeat performance this Saturday. (A Coachella spokesperson could only confirm Dr. Dre and Snoop Dogg's concert, not the hologram.)

Anytime you resurrect the dead, though, a lot of questions crop up, from the technical (why isn't this a hologram?) to the legal (who owns you when you're dead?) to the downright ethical (what's to stop you from reanimating the fill-in-worst-dictator-and-criminal-scenario here?). Besides death, there is one certainty: Digital zombies will continue to rise, and so will the controversies.

Not a hologram, Tupac is Pepper's Ghost. To be technical, Tupac's recreation wasn't a hologram or even 3D, explains Michael Bove, co-director of the Center for Future Storytelling at MIT Media Lab. "There clearly was some nice CGI work done by Digital

The weekday report for the topics and people that are trending on
Yahoo! and across the Web for Thursday April 19, 2012.

Research by Search editor Liz Streng

Commemorations around the world marked the Jewish genocide during World War II. Tributes were also paid to two musicians who died—one from a long illness, the other sudden. On the nature front, a small creature made its public debut. Below, other news catching people's attention across the Web.

STANDOUT SPIKES

• Holocaust Remembrance Day: Israelis gathered to read names at the Yad Vashem Holocaust memorial, and other tributes happened around the world to commemorate 6 million Jews killed during World War II. Related searches: yom hashoah
• Greg Ham: The 58-year-old Men at Work musician—who played the flute, saxophone, and keyboard—was found dead in his Melbourne home on Thursday.  Lead singer Colin Hay issued a statement: "We played in a band and conquered the world together. I love him very much. He's a beautiful man. He's here

Who's your dream celebrity dinner date? If you're a Trekkie, it might be William Shatner. For one lucky fan in South Carolina, his dream became a reality. Shatner had promised the Twitterverse that once he accumulated 1 million followers, he would take the 1 millionth follower to dinner. So that's exactly what he did.

Tuesday night, Shatner performed his one-man show in Charlotte, North Carolina, and then met up with Troy Pound and his wife, Wendy, to treat them to dinner. Shatner posted a video of the three of them enjoying their meal together.

As for Pound, he could not wait to share the news of his celebrity connection. Pound tweeted, "Still in awe of last night's dinner...what a wonderful time we had...thank you. #humbled"

Shatner was not the first celebrity to use Twitter to invite his followers to a special encounter. In March, NFL wide receiver Chad Ochocinco tweeted that he would pay for dinner for the first 200 people to arrive to Sylvia's Restaurant in Harlem. He tweeted,