Well, I know one of those. Worchester is pronounced Wuh-ster. The uh in there is hard to explain, though...it's not the u in luck, it's the shorter u sound in wood.
Interesting. I grew up near Wooster, Ohio. Does NOT rhyme with rooster. It's pronounced Wuh-ster, exactly as you described it - with the 'u' sound in wood.
A little town nearby is Berlin, with the accent on the first syllable instead of the second. So instead of pronouncing it as you would "ber-LIN, Germany", it's BERL-in.