Unable to attend the funeral for long-time friend and fellow Star Trek luminary Leonard Nimoy, William Shatner has taken to Twitter with a stream of posts, many answering questions posed by fans about the two. Many of the posts and reposts are quite touching, and it’s set off quite the Twitter frenzy as fans respond, tweet and retweet. Shatner also reposted a wonderful photo of a billboard, put up by a fan who said that it had made him choke up. Shatner was on the East…