Oh yeah, to add to the list for silent letters:
i: eight, freight
o: people [which is also often pronounced with a soft l]
Thanks, Peter, also, for pontacq [70+points for Scrabble]
On the flip side of this, how many English words have pronounciations of a letter that the word does not contain?
a: eight, weigh
b
c
d:
e: ziti,
f: laugh, phone, [anything with gh]
g:
h:cello
i: eye, [Thames], lymph;thyme
j:
k: chi
l:
m:
n:
o:______eaux
p:
q:
r:
s: pizza, psi, ci____; xu
t:
u:ewe;too, to,....................
v: of
w: one; chihuahua
x: ecstasy
y: llama
z: xi

Fun thread indeed! After reading all of these, I am convinced that the only letters never silent in English language [excluding proper nouns] are f, [unless you must debate the ff sounds], r, and v. Walk, talk, caulk, and many others with 'lk', have the l as audible but pronounced as a soft w sound. And thanks, Peter, for reminding me about 'fjord'. Thanks, everyone, for extending my [Scrabble] vocabulary.