I'd be interested in a Hulk series, and not for nostalgia reasons like everyone else. The problem with Hulk on film is that they have to focus on the standard Banner/Hulk dynamic, in which Banner is just this meek guy and Hulk is... well, he isn't a character; he's an event that happens to everyone else. With an ongoing series you can get into more interesting elements.
Punisher is also something much more suited to a tv show than a movie. When you make a Punisher film, you inevitably do his origin, and the movie is about him hunting down the people who killed his family. That's not punishment, it's revenge. In a tv show you start with that and then move on to punishing the rest of the evil-doers.