I challenged myself to a fast recall of car commercials and other product/service categories that seem to be running a lot. This is what came to mind.

- Chevy because they are putting forth a message and repeating it enough to stick.
- Chrylser 300 because I think of the Mazda commercial zig zag road that  
  accompanies their Zoom, Zoom, Zoom...so Chrysler makes me think of two 
  brands. 
 - Cadillac because rocket staging performance on the salt flats is an interesting 
  departure from their other recent ones.  
- Nissan "Love Hurts" because it proves how powerful music and lyrics can be for
  recall.
- There's also a nice Infinity commercial which simply states its strong points.
- I remember, but still don't "get" a Lexus commercial that has a guy in some sort
  of chase scene where he jumps into a car and slows down for a girl.
- Toyata's commercial with the father and son taking car through car wash.

For beer commercials my instant recall is for Bud's "too light, too heavy" campaign.
In fact, no other beer commercial even comes to mind except a Samuel Adams spot.

For household products you have to give a nod to Orkin and Swiffer for being kind of creepy but memorable. And to Electrolux for a memorable salute to amazing moms with Kelly Ripa.  

In the insurance category Progressive is doing a good job of branding against Geico and Allstate, while State Farm and Nationwide are both less memorable and probably less frequent.

In the soft drink category, currently 7-Up and Coke are the only brands that I've seen more than twice in one week. And every Coke commercial I've seen in the past two or three years seems to be different from the previous one.