Football: <input name="sport" value="football" type="checkbox" /><br />
  Baseball: <input name="sport" value="baseball" type="checkbox" /><br />
  Soccer:   <input name="sport" value="soccer"   type="checkbox" /><br />

##</code><code>##

  foreach my $sport ($cgi->param('sport') {
    # do something with sport
  }