If you're looking for the best seat:

• SeatGuru offers a good, well rounded general listing of CO seats.
• The CO SeatGuru Correction Elaboration Thread for specific seat questions.
• Best seat on Beech 1900
• Best seats on COPA in Y

Continental Airlines "Mainline" (CO):

737–500 (735)

737–700 (73G)

737-800 (738): 737-800 (738) with the mid-cabin lavatory (20/132)
.
737-900 (739):757–200 (752 or 757)

757–300 (753)

767–200 (762)

767–400 (764)

777–200 (772)


ExpressJet dba Continental Express (RU):

ERJ–145


Continental Micronesia "CO–Mike" (CO):

767–400 (767) Continental Micronesia Configuration

737-800 (738)


Copa Airlines "Copa" (CM):

737-800 (738): This plane is identical to a CO mainline 738.

737-700 (73G): This plane is identical to a CO mainline 73G.

EMB–190: This plane is reported to have 10 business class seats.

(If you know of a link to the seat maps, please feel free to post it!)


Colgan Air dba "Continental Connection" (9L):

Beech 1900

Saab 340

Dash-8 Q400

Chautauqua dba as "Continental Connection" (RP):

CRJ-200

ERJ145


Fleet fuel efficiency: (in gallons per seat flown 1,000 miles) Source.
737-8/9: 13.3
757-2/3: 14.5
737-700: 14.5
767-400: 15.1
777-200: 15.7
767-200: 18.6
737-500: 19.0