I'm too lazy to get links, so google is your friend! ^-^
Talisman 4th Edition Revised (Fantasy Flight Games) -> This is an all-night board game. It's fantastically fun though. It's an RPG/board game hybrid. Everyone draws a character card, which gives your starting life, health, magic, etc, as well as abilities unique to each class. (There's only one of each class card.) The great thing is, even if you die, you can still draw a new character card and jump right back in! The game only ends when someone makes it to the center of the board and successfully claims the Crown of Power.
In the vein of Munchkin, I have also played Super Munchkin, Star Munchkin, and Munchkin 7: Cheat with Both Hands. All at once. ^-^ Little tip, though: if you play with Cheat With Both Hands, you need to use only some of the cards from it, or else have at least three sets of Munchkin to play with; most of the cards from that set are enhancers to other cards. I have also played with Munchkin 5: Clerical Errors, which I'm told is generally considered the best of the expansions for the core Munchkin set.
Dominion is fun, a deck cycling game and in fact the first of its kind. If you play it though, be prepared to buy expansions, cuz it will probably get dull somewhat quickly if you don't fill out the kingdom card options. There's a free app for it for Windows available for download, by the dev, I believe. The rules are available for a free PDF download as well.
Thunderstone is another deck cycling game that I find fun. There is a Facebook app of that, including a tutorial. Only the tutorial and core set are free, however; expansions cost money. You can play vs AI or other Facebook players. It's more complicated than Dominion, but in a good way.
Ascension, by contrast, is the simplest and quickest of the deck cycling games I know, both in setup time and play time. It's my personal favorite deck cycling game, in fact the first one I ever played. Although it's simple to learn, it has a LOT of subtle depth and room for tactics and strategy, with various card synergies and whatnot. Like all deck cycling games, it is NOT a CCG; it all comes in the Core Set, just like Munchkin, though of course there are add-ons. The Core game for Ascension is called Chronicle of the Godslayer, and allows 4 players. There was an add-on called Revenge (or maybe Return) of the Fallen which lets an additional two players join. Then they released a second expansion that is large enough to play by itself with four players. If you only get one of the big 4-player sets, get the second one, Storm of Souls; it adds Events and Fanatics to the playstyle (which can be played with any of other sets). There is a free fanmade Windows app for it (original core set only), and there is a professional iPad app as well.
Nightfall is a fun fun fun deck cycling game, and my second favorite of the four I've listed. There's an iPad app for it as well. It plays up to 5 players, has a vampire/werewolf/undead slayer theme to it, and has a good depth.
Race for the Galaxy is not a CCG, but nor is it a deck cycling game. It is LOADS of fun. It takes a bit to learn, and even more to master it, but it is oh so worth it. There is a free, professional-looking Windows app available from the dev, and the company website has the rules for download as a free PDF. GET IT. I love it.
Of all these games, Ascension is the quickest to set up and play. Munchkin is the next quickest to set up, though not necessarily to play. Talisman 4th Edition Revised is similar to Risk in that you need to have a good chunk of time invested to play it, especially the more people you have playing. (Up to 6, I believe.)
