Loved Hitchhiker's Guide to the Galaxy, the movie ruined the book
The meaning I generally find in life is the basic 'meaning' of life- to pass on your genes, survive for as long as you can, and later die.
I don't think life has an ultimate, deep meaning, except for the meaning we give it ourselves.
Love the quotes in the book though...
"Life," said Marvin dolefully, "loathe it or ignore it, you can't like it."