Science Fiction

I have finished reading "i am legend" by richard matheson, and i enjoy michael crichton's books ( "prey"). both books i found brilliant, but can anyone recomend me some good ones to read? one thing i liked about the above two books were that although they were sci-fi, they make a good scientific approach to explaining the phenomena. i also liked arthur c clarkes short stories where the emphasis is not on the actual explaining of the technology, but more on it is effects of such things upon hubloke nature. to an extent, much in the same way as mary shelley's "frankenstein" went into more detail about the monsters reception in the public arena, as opposed to the physialogical in's and out's. i think i'm trying to say that i prefer sci-fi where the author makes a real attempt to integrate the fiction part in a realistic way (as opposed to klingons and photon torpedo's etc etc etc). thanks in advance

about anything by ben bova. isaac asimov. normally i read thrillers, at least lately. i've been getting burned out reading sci-fi. so i tried my mind on thrillers. if you like to expand your horizons, try matthew reilly whom i think is the greatest thriller writer on the planet today. also, running a close second is jack dubrul. enjoy.