Oh my gosh, I have to admit that this would have to be one of my favourite Seinfeld episodes of all time. Everytime I've watched it, I haven't been able to stop laughing for quite a while.
Elaine on some kinda of drug for the pain in her back is just so funny ... "STELLA!!"
And when the photographer gets them to say "Astronaut" (I'm pretty sure that was the word) ... Elaine says "Astro-what?"
Absolutely hilarious episode!!