I read the first three of these about four years ago, then promptly forgot about them entirely. Now the movie is upon us and Mary Laura had to go lend me her library copies of 4 and 5 and get me started on them again. (For which, thanks!) 
 And yep, they're still totally adorable and totally fun. The characters are all just so utterly likeable (even the obnoxious ones, somehow) and believable (despite the complete unreality of the premise and execution) that they just pull you right through the book, and O'Malley's writing is a sharp here as ever. The fight scenes are totally silly, but any such transparent a plot device probably should be. Even the old video games references are unexpectedly charming.