Hey John,
If you want to really experiment, you can pick around with old A/M/K series glass in the form of a prime lens. I know you are new to the K10D, but if you can learn how to use an old manual lens on that cam, it can come in really handy in lower light and will reward you with some great shots.
Focal lengths you would be interested in would probably be 28mm or 50mm for short range or panoramas. Telephoto prime would maybe be 135mm or 200mm. Try to go with the lower f stop with the 28 or 50. 1:3.5 or lower as marked on the 28's or 135's, 1:1.7 or lower on the 50's. I don't know enough 200's yet to give a recommendation.
Look around the Post your photos to see what you can expect and if you like the shots coming out of a certain focal length then check out the store to see if they have that lens.
Have fun!
P.S. Yes, I'm still up but not for much longer. I just finished rebooting a server