Do you *cough* leave ABC2 on all day *cough* show him educational TV? Our beastie knows her alphabet and can count to 20 and we blame the TV.
My DD is obsessed with ITNG and we use it when we're making dinner and if she's incredibly restless. She counts "Two, Free, Or, Five, Six, Sev, Eight, Nine, Ten, PONTIPINES"

Congratulations to Ramone. Clever guy!