This article is from the ER FAQ, by Rose Cooper firstname.lastname@example.org with numerous contributions by others.
CCH Pounder is the actress who plays Dr. Angela Hicks, a
staff surgeon who is occasionally seen in a supervisory capacity,
particularly with Peter Benton.
"CCH" are her initials. She doesn`t use periods to set them
apart like most people, which is what seems to confuse some folks.
(ER`s use of lower-case screen credits has also led some to
mistakenly wonder if "Cch" was actually a name.)
Her initials are derived from the name she was born with in
Guyana: Carol Christine Hilaria.
[And, for all those on alt.tv.er who are waiting breathlessly for the
Definitive Enunciation Guide, it`s pronounced "CeeCeeAich". The
alternative, of course, being "K-E-R-R-Y".]