If you annualize our quarterly revenue, it’s surprising that Apple is now a $50+ billion company. - Steve Jobs

And if you follow Apple's guidance, you wouldn't annualize the quarterly revenue:

Q1 (This Quarter) - The Company posted revenue of $15.68 billion and a net quarterly profit of $3.38 billion, or $3.67 per diluted share.

Q2 (Next Quarter) Looking ahead to the second fiscal quarter of 2010, we expect revenue in the range of about $11.0 billion to $11.4 billion and we expect diluted earnings per share in the range of about $2.06 to $2.18.