I like 30 minute shows better, I just find it hard to sit through a whole hour show, exp since now we just record things and skip all of the commercials. I think it would be cooler if more shows were more like kids shows where they could just have multiple smaller episodes play at one time instead of hour shows. I think this would work exp well for some sitcoms that doesn't really have the same theme every time and is more like you get a different message in every episode.
When it's shows besides sitcoms sometimes it's better to have hour long episodes like when it's dramas, reality tv shows, and a few others because it's more of a "to be continued" type of thing. I'm not sure this makes any sense at all....sorry =(