If Congress can't have progress, it can at least have some levity. It seems to work well for other parliamentary systems. Check out New Zealand's roster of banned "unparliamentary language," each example of which was actually uttered in session, usually in high dudgeon. These gems are too unusual to be expected as repeat offenses, so I figure this is really NZ's way of making government fun and forcing evolution in trash talk.
And if you've ever listened to the British Parliament, then you know what we are missing on C-SPAN. Even the bitterest arguments are conducted with a measure of good humor and usually wit, unlike here where everybody knows they're always two words away from getting shot.