I'm greatly enjoying a retro point-and-click adventure game called Quest for Infamy. It pays homage to the old Sierra games like Quest for Glory (probably the greatest influence, hence the name), King's Quest and even Leisure Suit Larry. It looks and plays just like them. The graphics are even 320x240 and 256 colors. It has full voice acting, though.
One way in that it's a little different from the Sierra classics is that you play an anti-hero, instead of a hero. You're a brash rogue who is not out to make friends, but to steal and get into a little trouble. Your dialogue with NPCs tends to be sarcastic. Your inner dialogue, the narrator who speaks to you when you try to do things (like using the hand icon on the busty barmaid), provides the bulk of the game's humor, with a majority being crass, sexist or, commonly, mocking of you (ex. "You could attack that with your sword, but you'd just look like an imbecile, so you reconsider"). Also, the game has some RPG elements, such as simple combat and buying/selling items, but it's mainly a point-and-click adventure.
It may seem a little expensive at $19.99, but this is one massive game. It's like the Skyrim of point-and-click adventure games, no joke. There are so many locations and so many artwork screens per location. You would think that an indie developer with a Kickstarter budget would be more economical and create a more compact game, re-using locations/artwork, but that's not the case at all.
If you have a great fondness for the old Sierra (or LucasArts) point-and-click adventure games, you really should try Quest for Infamy. It's highly nostalgic, yet completely new.
http://store.steampowered.com/app/264560/