<BODY><P>Saif undergoes emergency angiography</P> <P>&nbsp;Saif Ali Khan, 36, who has been in films since 1993 with his debut movie <EM>Parampara</EM>, and whose two films in 2006, namely <EM>Parineeta</EM> and <EM>Omkara</EM>, were super hits, was adm