As an employer, Klei Entertainment and Gaslamp Games seem like real fine places to work. I've had my eye on Gaslamp for a while, but Klei was recently featured in a Polygon piece, and their company culture sounds pretty healthy.
As a games producer, I'd have to say games by Bethesda, Firaxis, Obsidian and BioWare consistently produce games I enjoy (I just wish EA and Steam could resolve their dispute and finally get EA games back on Steam). Also a shout-out to Blizzard pre-WoW (including WoW, if I'm honest with myself) and the late Ensemble Studios + its Robot Entertainment successor, who have promise. CD Projekt Red make great Witcher games, but I really want to see them succeed at something different before I add them to the pantheon. Though to be fair, a lot of the games I really, really like are by studios that just haven't put out many games yet (Mojang, Subset, Arkane, Gaslamp, etc.).
As a customer relations entity, Mojang and Gaslamp are pretty great.
Also Valve, for providing us with Steam (the Portal games are fun too).
That's just off the top of my head.