Sidenote: I re-named all of my plane pictures by their registration numbers, and they are now titled by the registration number (click this text for the gallery).
With that out of the way, I now present photos of jets with no more than 100 seats.
JetBlue Embraer 190 (100 seats)
Republic (operating as US AIrways Express) Embraer 175 (80 seats)
Envoy Airlines (dba American Eagle) CRJ-700 (63-65 seats)
Endeavor Airlines (dba Delta Connection) CRJ-900 (76 seats)
Endeavor Airlines CRJ-200 (50 seats - these planes are being retired because they're too un-economical to run)