Need recommendations. I don't really know much about his interests other than he does watch the action shows on t.v.
Hmmmm... Eight year old reading levels are all over the place, so that makes it tough. I'd probably go toward graphic novels, because they have a broad appeal to boys that age. Here's a list to start:
-- Fangbone (DS just read this one from the library and loved it)
-- Franklin Richards, Son of a Genius Collection (DS LOVES this book and re-reads it frequently)
-- Soccer Longshot (or any of the other Sports Illustrated graphic novels)
-- Something like the National Geographic Ultimate Weird but True book is very popular for that age.
Hope this helps!
I take it that you don't know this child well and aren't familiar with what he's reading? It's a gift, perhaps? That's tough because you could be buying him something he already owns. A gift card to a bookstore may be a better idea. In case a gift card doesn't work, here are some suggestions:
Books by Roald Dahl (eg. Charlie and the Chocolate Factory, Danny the Champion of the World, the BFG)
Judy Blume (eg Tales of a Fourth Grade Nothing, Superfudge)
Edward Eager (eg Half Magic)
The Diary of a Wimpy Kid is popular with that age group.
Bunnicula (series) by James Howe
Redwall (series) by Brian Jacques (a long series which may keep him reading for quite a while. There is an animated television adaptation. It's an adventure series with animals in a kind of medieval setting - lots of battles and feasts). It might be a challenge, depending on his reading level.
If he's reading Harry Potter, he could manage the Percy Jackson series by Rick Riordan (who also has other series you could check out).