Shrek The Musical  [Original, Musical, Comedy]

Starring: Christopher Sieber [Lord Farquaad]

On the Twentieth Century  [Revival, Special, Benefit, Comedy, Concert]

Starring: Christopher Sieber [Bruce Granit]

Spamalot  [Original, Musical, Comedy]

Also Starring: Christopher Sieber [Prince Herbert's Father];
Also Starring: Christopher Sieber [Sir Dennis Galahad];
Also Starring: Christopher Sieber [The Black Knight];
Also Starring: Christopher Sieber [Prince Herbert's Father] - Replacement
(May 1, 2007 - Mar 23, 2008);
Also Starring: Christopher Sieber [Sir Dennis Galahad] - Replacement
(May 1, 2007 - Mar 23, 2008);
Also Starring: Christopher Sieber [The Black Knight] - Replacement
(May 1, 2007 - Mar 23, 2008)

Hair  [Revival, Special, Benefit, Concert]

Starring: Christopher Sieber

Into the Woods  [Revival, Musical, Comedy, Drama]

Understudy: Christopher Sieber [Cinderella's Prince];
Understudy: Christopher Sieber [Wolf];
Also Starring: Christopher Sieber [Rapunzel's Prince];
Also Starring: Christopher Sieber [Wolf]

Thoroughly Modern Millie  [Original, Musical, Comedy]

Performer: Christopher Sieber [Mr. Trevor Graydon] - Replacement
(Jan 28, 2003 - May 11, 2003)

Triumph of Love  [Original, Musical]

Performer: Christopher Sieber [Agis]

Chicago  [Revival, Musical, Comedy]

Performer: Christopher Sieber [Billy Flynn] - Replacement
(Jun 17, 2004 - Aug 1, 2004);
Performer: Christopher Sieber [Billy Flynn] - Replacement
(Mar 22, 2004 - May 2, 2004)

Beauty and the Beast  [Original, Musical, Comedy]

Performer: Christopher Sieber [Gaston] - Replacement