With the advent (and growing popularity) of eBooks, I’m seeing more and more articles about how much “better” they can be, because they have the option to be interactive … videos, music, glossaries … all sorts of little extra goodies to help “enhance” your reading experience, rather like listening to the Director’s commentary on a DVD of your favorite movie.
Honestly, it seems a bit gimmicky to me. The only "extras" i ever want in books are maps and genealogies in big epic books like the Song of Ice and Fire series or the Night's Dawn trilogy by Peter F. Hamilton. I'm honestly a bit perturbed by the dictionary feature in ereaders. Hate to sound old-fogeyish, but when i was a kid i always just puzzled out words from context rather than stop, go get the dictionary (we had a great big hardback one) and look up the word i didn't know. Even now, when it's just a matter of finding my cell phone and using the web, i rarely look up words. I'm not saying that people should have to memorize words and meanings by rote but using your reasoning to figure things out must be good for your cognitive abilities in general.
But back to the question, no, i don't want to see book trailers for "other books you might enjoy", there are few authors i want to see interviews of (Gaiman and King come to mind as ones i would watch), i don't want to watch some manufactured pop star do her take on the music of Westeros. Seems like catering to the ADD culture, not readers.