For a serious answer, Miccoli was a decent prospect at the time after a decent season with Perugia. We had DP, Trez, Di Vaio, and himself at the time ... say back in 2003-4. That year he was arguably our most reliable forward. However, I think that said less about him and more about the poor form everyone at Juve suffered across the line that season. Almost the entire squad, save maybe Zambrotta, walked through that season like zombies in a post-CL loss funk.
The problem was that Miccoli always felt himself capable of first-team starter play for Juventus. And I give him credit for believing in himself. But he was smoking crack if he thought Juve would reasonably start him over DP or Trez on any given Sunday, despite the then-problems in their form.
So then Capello came over, and a lot of players returned to top form. Ibra came over too, and Miccoli was pushed further down the list. We didn't have much use for him, and he wasn't going to be happy playing the bench every match. So he was sent to Fiorentina for a season on a joint-ownership deal and performed quite well. As a first-teamer at the Viola, he was quite vocal with his dissatisfaction with how he was handled at Juve. He took a number of pot shots at the club and, well, sounded like a whiner.
Then when the 2005 season ended, his joint contract was up for ownership. The Viola didn't bite, so it went to a closed ownership bid between Juve and Fiorentina (as did Chiellini). The cheapskate Viola put up fire sale prices on their bids, so Moggi got Miccoli, Chiellini, and Maresca for the price of an ice cream cone. Then Miccoli felt particularly slighted -- by both Juve and Fiorentina. Said some more inane crap about wishing death on both clubs.
Sent to Benfica a couple of years ago on loan (I think his Juve contract us up next June), he had to eat several tins of humble pie in the process after that ordeal. Some humility did him some good, as he's done very well at Benfica. They sell "SuperMiccoli" scarves outside the Estadio da Luz.