It means the book is full of cubes of knowledge. It's a good title.

Jack, on Don Geiss' book Geiss Cubes

You kept trying to order home massages off of Craigslist.

Jack

When can I start eating hard cheeses again?

Liz

You watched it for an hour, said Nicole Kidman should get an Oscar for it then shut it off.

Jack

CNBC gives me a headache. I get all my money advice from PBS.

Liz

Liz: I will spend half the day in twilight sleep and then I will go home to watch the Lifetime movie 'My Stepson Is My Cyber-Husband.'
Jack: That's inspired. You truly are the Picasso of loneliness.

[on stalking] That's a real problem in the celebrity community. But if Beyonce would just answer one of my letters, I'd stop trying to break into her house.

Tracy

Liz: [on V-day plans] One word: oral ... two words: oral surgery.

[on his speed dial rankings] Blackberry Warren Buffett, iPhone Jimmy Buffett.

Jack

Happy Valentine's Day, no one!

Liz

I always knew it would end one day. I just always thought it would be me in the trunk of a rental car.

Jenna

Dennis ... watching 'The Color Purple' drunk with you was one of my funnest nights ever.

Liz

30 Rock Season 4 Quotes

My dear friend Moby just opened a tea house in Park Slope. Do you know him?

Tracy

We'll trick those race car-loving wide loads into loving your, watching your lefty homoerotic propaganda hour yet!

Jack