First of all, I agree - You should never be let down by a bad review.
Having said that, I want to point out that Toonstruck (together with DarkSeed) mark the bottom of the adventure genre for me.
Normally, I wouldn't follow a good review by a bad remark, but this game was such a huge disappointment for me, that I had to...
I bought Toonstruck exactly for the reason you stated above. The animations looked great. The voice acting was clearly taken very seriously, and when I bought it (close to it's publication date), it had GOOD reviews.
I was very disappointed. I was bored to death.
I think the main problem with this game is that the puzzles are targeted at mature players, while everything else is targeted for small kids. I really wanted to like this game because I love cartoons and this was one of a few cartoon games back then, but I couldn't. It made me irritated and bored.
Still, I am glad you liked it, and hope many more did and will.