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

30 Rock Season 4 Episode 14 Quotes

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