I have been watching 30 Rock Season 3 all day today. In most of the episodes, Liz has on this gold necklace with two "L"s.
I did a bit of research and found out that it's a Helen Ficalora Alphabet Charm.
I also found out they're $125 for each charm! Yikes!
She makes lots of other beautiful charms - I love the sea shell ones!
There's a lot of other options I've found on Etsy for much cheaper.
One, or maybe more, will end up on my Christmas list this year!