There are some really good visible passes of the ISS coming up in the next 10 days - up to magnitude -3.3 and altitude 60 degrees. Times vary but best passes are mainly between 9.00 p.m. and 11.00 p.m. Details on ....
http://www.heavens-above.com/I love these images. This link shows the ISS passing in front of the Sun .....
http://www.astronomycamerasblog.com/2010/03/22/iss-transiting-the-sun/?forumid=127055This one shows the ISS transiting the Moon .....
http://twitpic.com/1i286j?forumid=127055Reminds me of something out of Star Wars and gives a real sense of scale.