Last night, my party made the mistake of tracking down Boba Fett in the mushroom forests of Felucia. One of their allies had been captured by the Bounty Hunter, and they had to intercept him and free the prisoner before Fett could deliver his acquisition. They knew he was a bounty hunter, but they didn't realize who he was until they were already engaged with him. I'm totally fine with my party breaking canon, so he had a legitimate wound threshold and could have been killed.
I set up Fett with an arsenal of weapons. He never used the same attack twice in a row. Quickdraw allowed him to switch from one toy to the next easily. He swooped about on his jetpack, causing as much as mayhem as possible. He carried a carbine, light blaster, a wrist-mounted flamethrower, a wrist-mounted grappling hook (if it hits, it automatically trips, ensnares, or disarms instead of dealing damage), and he could also flying kick using brawl (which would get two boosts if used with the jetpack). He had a missile tube, which he intend to save only for an emergency escape, since his reloads were on his ship.
Through the entire encounter, the party never managed to deal a single point of damage (he had adversary 3, defense 2, and made appropriate use of flight and terrain to avoid lightsaber attacks), but boy did they soundly defeat him.
First, he exchanged fire with his carbine vs the battledroid's built in blaster. He hit, badly wounding one PC. The battledroid missed, but damaged Fett's jetpack (the atmosphere was already causing jetpack problems, so this effectively grounded him for a few minutes - great move!).
Then, he fired his grappling hook to disarm the lightsaber-wielder (taking a moment to realize that his attackers might be more valuable bounties than his current captive). In the meantime, the PCs tried to slip around behind him to free the captive.
Then, he advanced and unleashed his flamethrower on the PCs, hitting several and badly burning the battledroid, who would remain on fire for much of the encounter. But the scoundrel PC hurled a glop grenade at Fett as he backed off. This was the only successful combat check for the PCs the entire encounter, but it effectively immobilized him for two turns.
The PCs took the opportunity to free the captive. Moment's later, Fett had managed to readjust the settings on his jetpack and he swooped in for a flying smash. But that PC drew her lightsaber and slashed back, destroying the launching mechanism on his missile.
Fett takes up a perch on a mushroom tree and shoots down a fleeing PC with his carbine. Even though he has lost his prey, the party now has one PC down and a second on trapped in a bog. Fett knows they aren't escape today. Plus he'd much rather have two aspiring Jedis to sell than a single rebel privateer.
The PC's then drove a vehicle into the mushroom tree that he was perched on, knocking him into a sinkhole filled with rotting mushrooms and mud. He lost his carbine in the muck, but fired back with his flamethrower.
Moments later, the PCs had mounted up on their vehicles (a speeder bike, a glider, and an ATV), and were being chased through the jungle by Fett and his faulty jetpack. Though Fett had lost two of his more deadly weapons (missile tube, carbine), he still had a flamethrower, grapple hook, and a blaster pistol. They swooped in and out of the trees. One of the PCs tried to use his whip to catch Fett's ankle and throw him into a tree, but Fett had the same idea, pulling the Duro from the vehicle with his grapple hook. Finally, as Fett was spraying flames down on the glider pilot, he caught the backdraft in his malfunctioning jetpack and spun into a tree. With no way left to pursue the PCs, they were able to escape and flee the planet and the horrid Mandalorian.
It was a truly epic encounter, and it gave them the shear terror of dealing with Boba Fett, knowing that they had gotten the best of him but and not truly defeated him. It was perfect.
TL;DR: The PCs faced Boba Fett. They didn't deal a single point of damage to him despite many tries, but managed to immobilize him twice and destroy his jetpack, missile tube, and carbine, leaving him trapped on a forest planet. Fett deal 50+ wounds over the course of the encounter, including three crits, but found himself outmatched by the PCs creativity and guile.