I have to disagree with some of the comments, I think prog scan was a pretty sizable jump. Definately not like VHS to DVD, or SD to HDTV, but a BIG jump none the less. Really, for the price of a few cables you can get a brand new prog. scan DVD player. Well worth it. On my TV (52" RCA RPTV) the jump to progressive scan did miracles for the edges of objects, the detail in hair and just generally looked a lot better. If you just look at the words in movies (like in star wars in the beginning.....in a universe far far away....) how straight and clear the edges of the letters of each word are on prog. as compared to interlaced is very noticable.
-Case