The outcry against the Clock Crew is very prominent on Newgrounds. I am always getting requests to ban them, so perhaps it is some sick side of me that doesn't do it. Many users have made anti-Clock movies. Some are good, while others are just as crappy as anything the Clock Crew produces. This only makes the situation that much worse - as the Portal has that much more crappy clock-related content.
The Clock Crew actually sent me a letter about the anti-clock sentiment in the Portal. The whole situation was so amusing that I posted the letter on Newgrounds. You can read the responses on the NG BBS.