They were exceptionally well done, and the guy did an incredible impression of Ledger. The make up was spot on, too.
Only saw the first couple minutes of the first one, I'll have to check out some more, but generally I'm not a fan of the Ledger impressions. They're not bad, but it's just too much of a rip off, like just taking things Joker did in TDK and recycling them, and sometimes badly or too much. Perfect example, Tell Gordon Hello, the guy is okay but he just takes those subtle tics Ledger added and overuses them, just constantly kicking his lips for example. or the guy at the beginning of Jokerblogs, "Hiii" directly from the Harvey Dent scene. They do a good job impersonating Heath, but I just don't see that as being how Heath would have played those scenes. It's obvious they're impersonating and not inhabiting the character, and sometimes it's cringe worthy. Not that I could do any better and I imagine it's really hard to try and recreate such an iconic character and make it unique and fresh, while still getting the audience to feel like they are watching that same character. You need subtlety and to be creative with it.
For example, take a deleted scene of Ledger's Joker, and give the script to the actor, the actor will play it like Heath did the mob scene or the Harvey Dent benefit scene, but Heath would play it as it's own scene, get creative with it, like he did in the hospital explosion scene. The impersonators wouldn't have done that, I don't think. They would channel from the "Hit Me! Hit me!" scene instead.
I'm sure it would be hard as hell to pull off, but that goes to show Ledger's genius with that particular character, he felt real not like a character. And The looks of the guys are pretty damn great, I'm not knocking that, just the acting was an impersonation, which would work if you're recreating the scene, but not in a completely different scene.
But I'm intrigued, I'm gonna watch the JokerBlogs. I love watching fan films, and despite how it sounds, I'm not overly critical. I thought that Dark Knight Returns fan film was awesome for what it was. But I appreciate the fan films more for the creativity, like watching Dennis and Mac's Lethal Weapon 5 on Always Sunny.