There is something about time travel novels that particularly appeals to me. I suppose it is that chance to go back for a free re-do, be it a personal one or one that positively (hopefully) affects the history of the whole world. That second type often involves eliminating someone like Adolph Hitler before they gain power - or changing the course of some major war like the Civil War or one of the two World Wars. Fun stuff, if done correctly with in depth character development and a side plot or two to worry about.
These are some of my favorites from the last few decades (in no particular order):
The book is illustrated by numerous old photographs of the various locations the time traveler wanders through during the novel. This was a groundbreaker.
Time on My Hands is one of those time travels novels that focuses on real life historical figures - in this case, former president Ronald Reagan. Here Peter Delacorte explores the case of a young man hired to return to the Hollywood of the late 1940s where he is to make contact with a young actor by the name of Ronald Reagan. His assignment is to do anything necessary to somehow push Reagan from the path that would bring him to the White House in 1980. What happens when our hero befriends Reagan under false pretenses but starts to actually like him makes for a fun ride.
The hero of this one goes back specifically to the great New York blizzard of 1888.
Laura Watt's Carry Me Back incorporates one of my favorite music genres (hard core traditional country) into a time travel novel...a perfect combination for someone like me. This 1997 novel involves ex-con Webb Pritchard who buys an old banjo to entertain himself after his release from prison. Unbeknownst to Pritchard, this is a magic banjo that transport him back to 1951 where he manages to wrangle himself a job with the man who went on to become country music royalty before he died at age 29, Hank Williams. The romance story inside this one is another that pays homage to Jack Finney. Carry Me Back is still on my shelves and I plan to re-read it in the next year or two.
Along the way, Balfour interacts with people like Albert Einstein, Betty Grable, John Kennedy, and FDR. This one is fun, but the appeal largely comes from getting to know the Balfour character well through several books.
Stephen Fry is one of the most talented people I know of: author, film star, comedian, television star, documentarian, etc. This man can do it all and this novel is no exception to the quality of his work. It is great fun...and one of the best snuff-Adolph time travel books I've encountered.
That's it for now, but this is fairly representative of my favorites of the genre. I haven't even mentioned older books like The Time Machine by H.G. Wells, but that is the one that created my love for time travel books in the first place when I first read it at age 12 or 13...and, of course, there was that great 1960s movie version of the novel. The movie locked me in for good.