I haven't read a dead wood in years.
I do have an affinity to the writings of Edgar Rice Burroughs
My dad had a wonderful collection of Tarzan books (hard covers) that I grew up reading and rereading.
I reread many of the Barsoom novels in excess of 5 times. I now have e-versions of them and still enjoy the stories.
I used to reread the books on The War of the Chtorr by David Gerrold but lost interest after rereading the first three multiple times waiting for him to finish the series (which I believe will never be completed, at least not by him).
When the kids were younger I must have read Patricia C. Wrede's Enchanted Forest Chronicles books ten times. Whats funny is every once in awhile I hear my kids quote parts of the books to their kids.
The SFBC made me a short story/compilation reader. While I don't reread the entire books, I do reread many of the stories multiple times. It was a quest for short stories that got me interested in eBooks in the first place. There are multiple volumes of Worlds Best Science Fiction that held my interest many times.
I've read the 11 books of swords and the first 4 books of the Berserker wars by Fred Saberhagen at least 5 times each. Never was really interested in his take on Dracula though.
I read Night's Master and Death's Master by Tanith Lee around 3 times.
Elfstones of Shannara by Terry Brooks 3 Times
Ender's Game by Orson Scott Card 3 times and Speaker For The Dead twice.
I've read Douglas Adams' HHG2TG series 6 times for every entry except Mostly Harmless that I didn't even know existed until recently.
Hitch-Hikers Guide to the Galaxy Series
1. The Hitch-Hikers Guide to the Galaxy (1979)
2. The Restaurant at the End of the Universe (1980)
3. Life, the Universe and Everything (1982)
4. So Long, and Thanks for All the Fish (1984)
5. Mostly Harmless (1992)
continued in the series by Eoin Colfer
I've enjoyed a few books by Issac Asimov multiple times. The first two books of Foundation and The Robot Collection.
I like Robert Silverberg and while there are not many of his novels that I have reread I have read much of his work.
I think I have read The Mote in God's Eye by Larry Niven at least 7 times if not more. Ringworld Engineers was another of Niven's that got multiple reads.
I just love rereading Heinlen's short stories. Destination Moon, Sky Lift and The Long Watch to name a few.
While I have read some of his more extended works I have not reread them.
Poul Anderson was one of the authors a friend of mine really liked while I was on ship in the Navy. I remember rereading a bunch of his soft covers so we could discuss them. It was great fun to explore our imaginations. During that time I was also a fan of the Dragonlance Novels by Margret Weis and Tracy Hickman. Went well with Thursday nights while playing Dungeons and Dragons in the rec room.
The Spearwielder Tales books by RA Salvatore also went well with the Dungeons and Dragons mindset I was in. I must have read Dragonslayer Returns at least 4 times. It lead me to Forgotten Realms and his contributions to that. I still kinda like how he writes.
Triplanetary (4 times), Galactic Patrol (twice) and Subspace Encounter (twice) by E.E. 'Doc' Smith.
Of the Chronicles of Amber by Roger Zelazny, I have read the first 6 books 4 times, Mainly because I bought the SFBC special that included the first 6 books. Others by him include; Creatures of Light and Darkness (2), Lord of Light (2), The Black Throne (3), Here There Be Dragons (5) and multiple short stories included in World's Best Science Fiction (1967 & 1968), Fantasy Hall of Fame (1998) and a few other anthologies.
While I am sure there are many others that I have reread multiple times these few are the ones that readily come to mind. Some of the eBooks are:
Who Goes There? by John W. Campbell Jr.
available in full at Outpost 31.
The Chronicles of Pern by Anne McCaffrey
available at Digital Library