Moving blog-content in the direction of rich-media and at the same time boosting your blogs functions, then you should really take a look at this.
Beliving that the blogs of tomorrow will be something extremely more powerful and cool as to functions and content, the year to come is allready turning into a frenchy for cooking up killer-aps for bloggers. For both the pro´s and amateurs.
For instance, if you have a steady group of followers, why not let them chat on your blog instead of just leaving comments. Darren Rowse over at problogger.net wrote about this some time back. So go take a look at 3bubbles, they´ve got a chat-plugin for you if you wanna be hot.
Moving on to richer medias, why not post you music, videos, pictures and live webcam on your blog. Stickam has solved the whole thing for you in a very groovy way, and will even host the whole thing for you.