Notable: I (sadly) managed to finish the Discworld series, so far as I know, and I love them all, in their own way. Thud! was a particular favorite, and I'll likely re-listen to Hogfather again and again. I made it all the way through The Count of Monte Cristo, which, though enjoyable at times, was quite a slog to focus on during my commute. I love to listen to Neil Gaiman telling me stories, and I discovered that I quite enjoy Heinlein, when he isn't being overtly political. And I listened to Kafka's The Trial shortly before embarking on a Kafkaesque task at work, and the absurdity of the whole thing helped me get through it without losing my mind.

Statistics:
Total audiobooks: 39
Number that were a re-listen: 11
Number that I'd previously read as a print book: 7

Key:
r = Re-listened. I previously listened to this particular audiobook.
df = Different format. I previously read this as a print book.

1. Stardust, Neil Gaiman, narrated by Neil Gaiman (r, df)
2. Fragile Things, Neil Gaiman, narrated by Neil Gaiman (r, df)
3. The Lincoln-Douglas Debates, Abraham Lincoln and Stephen Douglas, narrated by David Straithairn and Richard Dreyfuss
4. The Graveyard Book, Neil Gaiman, narrated by Neil Gaiman (r, df)
5. Pyramids, Terry Pratchett, narrated by Nigel Planer (r)
6. METAtropolis, Jay Lake, Tobias Buckell, Elizabeth Bear, John Scalzi, Karl Schroeder, narrated by Michael Hogan, Scott Brick, Kandyse McClure, Alessandro Juliani, Stefan Rudnicki, John Scalzi
7. The Curious Case of Benjamin Button, F. Scott Fitzgerald, narrated by B.J. Harrison
8. Jingo, Terry Pratchett, narrated by Nigel Planer
9. The Exit Door Leads In, Philip K. Dick, narrated by Paul Michael Garcia
10. Those Who Seek Forgiveness, Laurell K. Hamilton, narrated by ?? (no longer available on audible)
11. 3:10 to Yuma, Elmore Leonard, narrated by Henry Rollins
12. The Namesake, Jhumpa Lahiri, narrated by Sarita Choudhury
13. Guards! Guards!, Terry Pratchett, narrated by Nigel Planer (r)
14. The Last Continent, Terry Pratchett, narrated by Nigel Planer
15. Mother Night, Kurt Vonnegut, narrated by Victor Bevine
16. The Trial, Franz Kafka, narrated by Geoffrey Howard
17. Hogfather, Terry Pratchett, narrated by Nigel Planer (r)
18. Neverwhere, Neil Gaiman, narrated by Neil Gaiman (r, df)
19. The Fifth Elephant, Terry Pratchett, narrated by Stephen Briggs
20. M is for Magic, Neil Gaiman, narrated by Neil Gaiman (r, df)
21. The Truth, Terry Pratchett, narrated by Stephen Briggs
22. Moving Pictures, Terry Pratchett, narrated by Nigel Planer (r)
23. Starman Jones, Robert A. Heinlein, narrated by Paul Michael Garcia
24. Night Watch, Terry Pratchett, narrated by Stephen Briggs
25. Lords and Ladies, Terry Pratchett, narrated by Nigel Planer
26. The Count of Monte Cristo, Alexander Dumas, narrated by John Lee
27. The Wee Free Men, Terry Pratchett, narrated by Stephen Briggs
28. Monstrous Regiment, Terry Pratchett, narrated by Stephen Briggs
29. A Hat Full of Sky, Terry Pratchett, narrated by Stephen Briggs
30. Coraline, Neil Gaiman, narrated by Neil Gaiman (r, df)
31. Men at Arms, Terry Pratchett, narrated by Nigel Planer (r)
32. Going PostalTerry Pratchett, Stephen Briggs
33. Thud!, Terry Pratchett, narrated by Stephen Briggs
34. Wintersmith, Terry Pratchett, narrated by Stephen Briggs
35. Making Money, Terry Pratchett, narrated by Stephen Briggs
36. Unseen Academicals, Terry Pratchett, narrated by Stephen Briggs
37. Good Omens, Neil Gaiman and Terry Pratchett, narrated by Martin Jarvis (df)
38. Thief of Time, Terry Pratchett, narrated by Stephen Briggs
39. Carpe Jugulum, Terry Pratchett, narrated by Nigel Planer