Last year’s iPhone introduction was an A+, with a beyond-cool gadget, new software and new services. So how did Apple (AAPL) score this year with its Macworld presentations? A slim laptop with Intel (INTC) inside won bonus points, but aside from that, CEO Steve Jobs had to rely on his top-notch presentation skills. This is how we graded his keynote announcements:

Flash-based laptops? Suped-up iPhones? The wait is over for Apple’s biggest announcements of the year.

The crowd at Macworld 2008 settles in for the Steve Jobs keynote. Photo: Jon Fortt

SAN FRANCISCO — The keynote has begun. There’s a Mac vs. PC commercial showing. PC is talking about what a bad year 2007 was, with all of Apple’s announcements including the iPhone. PC says 2008, though, will be a great year. “What are you going to do?” Mac asks. “I’m just going to copy everything you did in 2007.”

Steve Jobs walks onstage from the left.

Hours before the Macworld 2008 keynote, Apple offered this teaser message on its website. Image: Apple.com

FORTUNE will have live coverage of Apple (AAPL) CEO Steve Jobs’ keynote at Macworld San Francisco, beginning at 12 p.m., at http://fortune.com/bigtech. Jobs is expected to unveil new Mac computers with Intel (INTC) chips, a new version of Microsoft (MSFT) Office for the Mac, updates to the iPhone that runs on AT&T’s (T) U.S. network, and enhancements to the iTunes Store.

In the hours before the highly anticipated keynote, Apple offered this teaser message on its site: “There’s something in the air. Watch the Macworld 2008 Keynote by Steve Jobs, Tuesday afternoon on Apple.com.” The message could be a reference to new wireless technology, streaming digital content, or something else – with Apple, you never know.