I love strategy games, whether they're real-time (Age of Empires etc.) or turn-based like Civ - this package brought back some misty-eyed memories of playing dodgy copies of Civ I and Civ II when I was at university back in the days when games came on floppy disks.
What we have here is basically a compilation of all the Civilization games, with a couple of expansion packs and a card game thrown in for good measure, and at a pretty unbeatable price to boot. Most people will probably be familiar with Civilizations III and IV, the latter being one of the most addictive games known to man, but the first two games are well worth a look if only because they come from a time when gameplay was evidently preferred over looks. Granted, they don't stand up to any modern games in the graphics department, but they more than make up for it in being almost terminally addictive. An added bonus, for me at least, is the 'Civilization' card game, which is surprisingly good fun once you've picked up the rules.
My only real gripe would be the lack of 'Alpha Centauri', which is a Civilization-type game and a logical follow-on from most of the original Civ games (Civ 4 in particular) and adds a couple of nice twists to the standard 4X strategy game. However, given that AC can be picked up fairly cheaply nowadays it's not that big a deal.
If you like strategy games, chances are you'll already have this pack or even all of the 'original' Civ releases. If you're wondering what all the fuss is about, this is a good place to start - you can't really go wrong with 4 games (4 games with replay value, yet) for 20 quid.