Ending?

Uhm...let's see..

A little girl walks up to Rainbow Randolph and prevents him from setting himself on fire, before running off with the rest of the crowd because they see Sheldon (Smoochy) on the street.
Since Spinner was giving his cousin headaches from banging on that instrument all the time, he's given another job on the show; Smoochy's cousin Moochy.
The bad guys from the parade of hope set out to kill Smoochy, but unfortunately they kill Moochy (Spinner) instead, not paying attention that "Smoochy is fuchsia and Moochy is burgundy".
At first the Irish mafia thinks it was Rainbow Randolph, but a relative who's working at the morgue provides some evidence that it was indeed the parade of hope. (Apparently, they have a unique way of snapping someone's neck..)
When Sheldon and Nora are at his apartment (they kissed and stuff while Spinner was being killed), suddenly Rainbow Randolph shows up with a gun. When there's a chance, Nora makes Sheldon go for the gun and, after that fails, smacks Randolph upon the head with a book. Randolph has a little breakdown and in the end makes friends with Smoochy.
Meanwhile, Burke and Stokes (DeVito and Stewart) have found a killer/drug addict to kill Smoochy during the ice show. He steals Angelo's (the guy Randolph went to live with when he had nowhere to go) accreditation and hides on the drawing floor of the ice stadium. Angelo informs Randolph and Randolph sets out to rescue Smoochy!
Smoochy does the ice show and just when the killer is about to shoot him, Randolph overthrows the killer, missing his target and only hitting Smoochy's rhino hat with the bullets. The killer falls down and Burke flees, Smoochy on his back with a gun, because "You just *beep* with the wrong rhino!".
However, he doesn't kill him when he has the chance, because Tommy and her boys show up and she tells Smoochy not to ruin his life over this, she'll take care of it. Sheldon/Smoochy and Nora leave and have their big kiss-happy end scene.
While the credits roll, you can see Smoochy and Rainbow Randolph performing on the ice together.

Hope that was detailled enough :)