Nothing to do with purity. I’d assume the t-shirt retailers have already run the numbers and found that any additional sales they might get from CBS.com isn’t worth the kind of profit sharing CBS would ask for.
Secondly, CBS already has a Big Bang Theory store on their website where they sell t-shirts related to the show that they’ve designed themselves. They’ve probably run the numbers and figured out that trying to sell link space for another retailer’s items on their web store would cut into the profits of the shirts they own the full license for.
There is also a make-up for “lizard-men” that gets re-used a lot. I’ve seen it in Battle Beyond the Stars and Fugitive From the Empire. I am fairly certain that I’ve seen it in other low-budget sci-fi shows from the late 1970s and early 1980s.
Speaking of The Big Bang Theory, the double entendre of the title was totally lost on me until a couple of months ago. I don’t recall what jump started my epiphany but there aren’t enough :smack:s to illustrate how stupid I felt.
After watching the first three seasons of 30 Rock on Netflix, I just realized that the message on Frank’s (Judah Frielander) hat changes, not just every episode but many times throughout each episode.
Speaking of “Friends,” it’s probably not too arcane, but the message on the whiteboard on Chandler and Joey’s apartment often changed.
As for the actors, I’d say Joey and Ross were the weakest - the rest were all competent plus. Watching other comedies though, there really wasn’t a weak link on that show.
This doesn’t exactly fit the topic, but there’s an episode of, I believe, Alfred Hitchcock Presents starring George Peppard and Peter Lorre wherein Peppard suffers extreme facial contortions trying mightily to keep from cracking up as Lorre is delivering his lines.
This will reveal the depths of my Nerdom but many years ago when Friends was still airing, I was a poster on the Friends Usenet Newsgroup. One of the writers of the show used to regularly post as well. One day, he posted something to the effect that the group should watch carefully on such and such a date. So when the episode aired on that day, it turned out he had written “Hi Evil Jo” on the whiteboard in their apartment. Evil Jo was one of the more prolific posters on the Newsgroup (I might be misremembering the user name but it was something like that). The Group just immediately blew up with excitement. I had to admit, it was pretty neat.