For those who were looking forward to Leonard Nimoy's participation in the next Star Trek sequel -- or perhaps an on-screen reunion between Nimoy and William Shatner -- you can forget about it. According to the Toronto Sun, Nimoy will be retiring from acting once he finishes up his final appearance as Dr. William Bell in the TV show Fringe. "I've been doing this professionally for 60 years. I love the idea of going out on a positive note. I've had a great, great time," Nimoy told the paper.

Regarding Star Trek, Nimoy admitted that it just wouldn't be right to continue on playing Spock when there's a new actor attempting to make the character his own. He notes, "I want to get off the stage. Also, I don't think it would be fair to Zachary Quinto (who played the younger Spock in J.J. Abrams' Star Trek reboot). He's a terrific actor, he looks the part, and it's time to give him some space. And I'm very flattered the character will continue."

Nimoy was in Canada for this weekend's Calgary Comic and Entertainment Expo, which he said "could be the last go-round for that too," alluding to the fact that once he retires from acting, he may retire from attending fan conventions too. Nimoy will be making one final stop on his decades-old Trek journey this Friday when he shoots over to the town of Vulcan in Southern Alberta for the first time. There he will be in attendance for the unveiling of a bronze Spock bust while his Vulcan salute will be forever captured in a handprint ceremony. Fitting, don't you think? Live long and prosper, Mr. Nimoy.