My DVD collection has a lot of decidedly awesome items, but my games are primarily standard editions. As far as I'm concerned, there's no point buying a "special edition" or a "collector edition" if it doesn't actually come with something extra to entice me into buying it. I have that same X-Com set (bought for a fiver in PC World's bargain bin, score!!) and the C&C set but wouldn't call them special editions as there's nothing "special" about them... but that's just my own personal way of thinking. If it comes with a trinket, a model, a little something extra then I'd consider buying it for collectible reasons but only then. I think my ONLY special edition game, looking at it that way, is the Two Worlds set with the t-shirt, pack of cards, A2 poster (double sided), "Kilgorin" replica letter opener, "Making of" DVD and soundtrack. I never bought the Fallout 3 lunchbox, as much as I love Fallout 3, as I just didn't think it was impressive enough and almost bought the PipBoy version but saw enough close ups to realise it was too plasticky. I'm FAR too fussy now, but it's good for the finances
EDIT: Actually... looking at this now, the t-shirt is really quite spiffing looking. I'm now tempted to open up the set and stick the t-shirt on, although it'll probably be far too small. I hate not opening special eds. Damn.