You need to clean your sensor or lens mate, using a smaller aperture (f/14 in some of your pics) really shows the dirt up...
<tuffty/>
+1.
The spots in the images are at pretty consistent locations, which is one of the tell tale signs of it being on the sensor (with certain lens configurations the spots can move a bit at different focal lengths - even in those cases, static spots could be a dirty rear-element).
Give the front element of your lens a clean with an air blower (rubber bellow type thing, not canned air) and lens cloth, a blower and a swab or narrow lenspen will clean the rear element. Take a test shot at f/22 of a white/fairly light coloured wall - hopefully you'll get a pretty long exposure, during which you can 'wave' the camera around the wall a bit to blur any detail in the wall.
If you've still got spots in your image, there's dust on your sensor. Get your air blower to hand, and choose sensor cleaning in the set-up menu of your 350D. Once you've activated it and you hear the shutter open, remove the lens with the camera facing downward, and with the nozzle of the blower a couple of inches outside the lens mount, give it a few squirts. Turn the camera off and you'll hear the shutter close, replace your lens and test again...
Hopefully the spots will disappear, if not you might need to think about an Arctic Butterfly or a sensor cleaning service...
...Anyyyway... Nice shots :thumbsup: The composition on the second one is really good! Number 5 is pretty good too. I think the first shot would gain some impact if you straighten the horizon. I quite like the A6 ones too, but I think there could be a little more space in the frame around it. The one with your S3 and his A6 too.
Overall though, impressive work. Particularly as I say, 1, 2, and 5...
Let us know how you get on grappling with those spots and keep up the good work!
Rob.