Even if The Resistance is listed on BGG under 'party games' I don't think he should exclude it. It can play well in that setting, but it doesn't feel like a typical party game at all. I would recommend it regardless. It is cheap and great for when you get 5-10.
Through the Ages: A Story of Civilization - At first glance, it absolutely looks like a euro with no theme. After multiple plays, it absolutely feels like Civilization videogame. My favorite game; I love thematic games and eurogames and would always play a thematic game over something more abstract. But I'll always play TtA over anything else
Chaos in the Old World - Don't know much about it, only that I've seen folks say that this is a better game than Cyclades
Stronghold - One side's invaders, one side's defenders. Solid mechanics
1812: The Invasion of Canada - +1 to this excellent game. There is no other wargame that does what it does. It's the wargame for eurogamers and Risk for wargamers.
Dungeon Petz - Not much conflict in this game, a heavy euro with tons of theme. Ever felt upset about a piece of cardboard dying?
1960: The Making of the President - There are cubes but they represent your support in a state. Beautiful components and cards that look like newspaper clippings, it's a great game.
Lords of Vegas - this one drips of Vegas theme. For when you want to yell at your friends and not kill your brain too much
Revolver 2: Last Stand at Malpaso - The Magnificent 7, the cardgame. It's actually well-made and well-balanced! The ability to use cards for multiple things and the agony of choosing which way to actually reminds me of 1960
I myself am torn on Merchants and Marauders as I hear it takes too long for what it is and the downtime can be killer. The designer offered an untested variant to shorten playtime that has received good feedback (namely, a port action has to be your last action). We'll see....