I'm a big fan of Tom Clancy's Splinter Cell series of games. Been playing them since eternity.
As for Jack Ryan, I've seen only two movies in the series: 'The Hunt for Red October' (Alec Baldwin) and Jack Ryan: Shadow Recruit (Chris Pine). The first one is definitely a classic. Can't say the same about the other one, though.
Shadow Recruit is just an okay, semi-decent movie. Nothing spectacular. Besides, I think Pine is too 'cute' to pull off Jack Ryan, but that's just my opinion, of course.
Might watch Harrison Ford ones soon (Patriot Games, Clear & Present Danger).