LOL . . . I meant H.G. As far as I know, Orson Welles never wrote a book (though I suppose he did, coincidentally, make a movie based on an H.G. Wells novel). I've never read H.G. Wells anything, but my wife recently read the Time Machine and really liked it. At any rate, the Ellison Invisible Man is definitely a classic, but a much different novel than the Wells book. It's not about a literally invisible man at all, but rather about race relations in the early 20th century in the US.
edit: BTW, don't rule out Memoirs of an Invisible Man by H.F. Saint. It is an incredibly good read. Far far far better than the Chevy Chase movie based on it. One of the best times I've ever had reading a book.