Theo's Puzzles is a online game on the PBS Kids website. There are puzzles of almost every letter (There are no vowels) and after every puzzle is complete, Theo shows a Real Kids segment about the letter.
b (basketball, baseball, beachball, boy, boat, banana)
c (cookie, cool, collar, catcher, carrot, corn, cornflakes)
d (drum, doll, dipper, dollar, dog, dime, dreamcatcher)
f (flour, flower, fan, Fred, fried pickle, french fries, fish, fish, fish)
g (goggles, girl, golf ball, golf club, guitar, gumballs)
j (jaw, jacket, jug, jeans, juice, jet, jam, jelly)
k (kite, kayak, kilt, kettle, kitten, ketchup, kimono, kazoo)
l (light, lily, lily pad, lime, Lionel, lollipop, lemon, lamp, lick, Leona)
m (marker, mouth, Mom, microphone, me, Mom, moccasins, Mom)
n (nickel, nest, neck, nine, noodle, nose, net, napkin)
p (pig, paint, pants, pumpkin, penny, pan, pizza, pie)
q or qu (quilt, queen, quarter, quill, question mark)
r (rabbit, radio, rattle, rope, rainbow, rose, restaurant, rocket, rake, ribbon, rug, rings)
s (sneeze, snorkel, sunglasses, socks, saddle, sandals, sand, sneeze)
t (tympani, trumpet, trombone, triangle, tambourine, tuba)
v (visor, venetian blind, violin, vest, vacuum cleaner, vending machine, vase, volcano, video game)
w (wall, wagon, water, watch, worm, woman, women, wink)
x (sax, fox, six, Texas, tuxedo, box)
y (yum, yarn, yo-yo, yardstick, yacht, yellow)
z (zebra, zero, ziti, zither, zipper)