You don't need a telescope and it is not really astronomy but... ISS is very bright. Iridium flares are interesting. It is a whole world to explore and think about. You can see first satellite watchers in 'October Sky/Rocket boys'; a very nice film about science education in the US after the Sputnik launch.
I don't know what it is (I still use Firefox 1.5 on an old Ubuntu 6.06 (Dapper Drake) and/. is so slow that I hesitate to visit it. (There is always a busy script I have to stop, GoogleAds or something takes an eternity to load; not to speak about the FLASH adds... Unfortunately, RSS does not help as it is so full of advertizing that the text is difficult to find. I thing I will ditch Slashdot and digg elsewhere.