I've lived in Anaheim for almost three years so here's some travel tips
based on experience.

For domestic travellers, if you can avoid LAX and use Long Beach (LGB),
John Wayne(SNA), or Ontario (ONT),  do it.
I find LGB convenient.  I haven't used ONT.  It's a bit further but a
lot of people like it.

For LAX I use "Disneyland Express" bus service www.airportbus.com.
They will service any of the area hotels.  1/2 hr service at LAX,
$28/round trip.
They serve the other airports, too, but I always drive to them.

If anyone has better ideas, tell me.  I'd love to know.

cds

That means bus leaves every 1/2 hr.
Once aboard, it's going to take longer than 1/2 hr to get to Anaheim,
I'm afraid!
I drove through LA on a Sunday night at 10PM and came to a dead halt on
the freeway.  No discernable reason.

Ray Wurlod, U2 guru from Australia, points out a better LAX-Anheim
ground transport deal:

   SuperShuttle services LAX (can't avoid it - coming from
   Australia).  You can get a special IBM rate $12 each way by
visiting
   http://www-306.ibm.com/software/data/ondemandbusiness/conf2006
   /tab_reg_hotel.html (there's a PDF for printing vouchers) and
   http://www.supershuttle.com/webrez/Welcome.aspx?GC=8G7MQ
   You can book and pre-pay on the web.