Orhan Pamuk - White Fortress ✮✮☆☆☆
Cormac McCarthy - Blood Meridian ★★★☆☆
Paul Auster - Mr. Vertigo ★★★☆☆
Kurt Vonnegut - Slaughterhouse-Five ★★★★★
John Fante - Dreams from Bunker Hill ★★☆☆☆ (he crayoned like a third of the third star as well, but I can't tell if that means it's a legit 2 1/2 or if he changed his mind halfway through)
Milan Kundera - Immortality ★★★★☆
Joseph Heller - Catch-22 ★★★★★ (4 1/2, really, but I can't find a half-filled star emoji)
Haruki Murakami - Kafka on the Shore ★★★★★
I'm sad he didn't enjoy McCarthy or that Auster novel that much [he was verbally pleased after finishing all of his 5-star books, so I'm going to interpret the 3-star ones as "meh" or "high reservations"], because I was impressed with both of them during my reads - Vertigo especially has a harrowing scene/twist moment I haven't quite forgotten to this day (and I can't keep in my mind what I've read three books apart).
I'm very surprised he liked Kundera that much, given that Kundera is prone to heavy intertextual gimmicks.
I am shell shocked he liked Murakami that much, because I was sure the shenanigan factor of his books would prove too much.
What's both informative and depressing about these ratings is that he clearly enjoys highly humorous or ironic literature. Which is a problem for me, as his distributor, because I have not read that much. My fix tends to be either serious and profound dramas, either complicated and experimental literature. (Any recommendations on the HaHa solid literature side would be helpful, I guess.)
Case in point, I gave him Beloved next.

P.S.: I've stepped up with my readings since the total slump that was 2016 and am not doing a bad job myself. Four books to dad's eight.
Harper Lee - To Kill a Mockingbird ★★★★☆
Toni Morrison - Beloved ★★★★★
William Burroughs - The Soft Machine (read in original!) ★★★☆☆ (although I'd say it almost ended up with a ★★☆☆☆, if not for some segments that clicked better and his addendum "serious talk time" essay; otherwise this was fairly disappointing and hard to process or indulge in)
Ioan Slavici - Folk Tales ★★★☆☆ (read in jest [or rather in a fit?] when I demanded a recommendation myself for once and just got told to read folk tales or something -___-)