I think it is good idea, would be if you could set up a mouse hover... When you hover over the image it changes to a different character or image after say 1.5-2 seconds. Would be a pretty neat feature to add in and give a little more information about the series.
This will also allow you to change your search preference. If you prefer the traditional search format, or you can select the new one, or a hybrid of both. This will really give each user the option to search more freely and to their preference.
One thing i might be concerned of is that Box should never start putting in too much graphics, Java or DHTML into their script. Even though we live in the age of High Speed, there are still torrenters out there who don't have a lot of bandwidth, adding too much could cause page loading lag time, especially if they are torrenting while browsing.
Side note - Also, I find box's current layout to be very refreshing, simple, neat, and clean. You need to make sure ya'll never try to bunch in too much stuff onto one page, then it just gets jumbled and messy.