Hello does anybody know the name of a sci-fi show which was in black and white probaby 50s or 60s it was about a guy in a rocket suit and it always left a great cliffhanger at the end of each eposide .I thought it was called the rocket man but can't find anything about it on the net.can anybody help please?

Sounds like King of the Rocket Men (1949) (http://www.imdb.com/title/tt0041547/) from RKO pictures.
I love those old series.

More info here: http://www.internationalhero.co.uk/r/rocketmn.htm

Maybe Ultraman

Ultraman on TV.com - Free Full Episodes & Clips, & Show Info (http://www.tv.com/ultraman/show/23633/summary.html?q=Ultraman&tag=search_results;title;1)

Captain Midnight.

Captain Midnight: The Human Bullet - TV.com (http://www.tv.com/no-name/The+Human+Bullet/episode/141928/summary.html?tag=prev_episode;title)