I'm a HUGE fan of Friends repeats on TBS- If it's on, I'm locked in for like 2 hours! If you were ever curious as to why they ended up getting Monica and Chandler together, they just answered that question

 

“We plotted it out in a self-protective way. It wasn’t a relationship [the other characters were] talking about. Nobody knew about it. We as writers were almost as protective of it as those characters were. We didn’t want to make too much of a deal about it too early. That’s what you saw on the screen, but it’s also how we experienced it. We didn’t want to spend too much too fast. We didn’t want it to be high drama. So we just kept taking baby steps forward and feeling our way through. …

If you didn’t have a Monica-and-Chandler relationship, if the center of ’Friends’ had remained Ross and Rachel, you would’ve seen a much shorter shelf life for the show. Without Monica and Chandler, it ends three years earlier. I don’t owe my whole house to them, but at least two bedrooms and a bath are because of them.”

(NYmag.com)