I used to be a big Rainbow Six addict, and even more of a Rogue Spear fan! The games are great - except for "Ruthless", haven't read anything by him though...
I'm a big fan of the books, and have read all of them (except for Shadow Warriors which is on my agenda for March.)
I've played almost all of the games, and to be honest they aren't always the best. Some of them are decent though.
I have only read "Rainbow Six" and "Patriot Games" from him. Almost finished "Hunt of Red October". I have played all the R6 games from the beginning until Covert Ops. Really good games, especially on multi.