Greetings, Earth-Nerds!

I'm after recommendations for interesting science fiction or fantasy books for some escapist fun. Mystery, suspense, plots within plots, unspeakable secrets lurking in decaying space stations, dark rituals in underground temples, planet-sized alien intelligences orbiting neutron stars. The weirder the better, preferably not a total misery-fest, decent writing and non-awful politics would be nice.

Any suggestions? Thanks!