How to use sed to remove html tags including text between them

How to use sed to remove html tags including text between them?
Example: User <b> rolvak </b> is stupid. It does not using <b>OOP</b>!
and should output: User is stupid. It does not using !
Thank you..

Oh sorry, this only removes the tags,

Solved: cat file | sed 's/<b>.*</b>//g'