I have now dowloaded the TIGER 2008 data for San Bernardino, Riverside, Orange, Los Angeles, San Diego, Mohave (AZ), and La Paz (AZ) counties and taken a look in ArcGIS.
San Bernardino, Los Angeles, and San Diego counties all look really good now. San Bernardino has been completely realigned when compared to all previous versions of TIGER. Both Los Angeles and San Diego counties look like they have minor revisions from the TIGER 2007 data that was posted earlier this year. Both Mohave County and La Paz County look like they have been realigned as well and are quite accurate when compared to aerial imagery and USGS 7.5" topo data.
It apears as though Orange and Riverside counties have been worked on but the freeways still look pretty bad. Most streets in both counties look spatially accurate when compared to older TIGER releases but the freeways look like a work in progress still. I'm guessing these will be completed in the next release.