easyJet are a very reasonable airline for a LCC, but they don't really have a US equivalent. They are probably closest to Southwest, however they don't offer quite the same product. They are certainly a step above the notorious FR
(their 'stateside' equivalent would be Spirit). For example, they don't charge for airport check-in (like other Euro LCCs) and they don't have a limit on their hand luggage weight (although only 1 per person and you must be able to lift it, and fit it in the measuring 'cage'). There are fees for hold luggage - limit is 20KG.
Service is purely BOB (drinks are also charged for, but that's standard for European LCCs) - http://buyonboard.easyjet.com/
see this link for details. Most of the cabin staff are friendly, although I have more experience of their UK based crews.
It's worth noting that ground operations (including check-in/boarding/customer service/baggage/ramp) are usually contracted out to private handling companies, even at larger operating bases. This is completely standard practice in Europe, even for full-service airlines at non-bases. They may wear the airline uniform (although they don't usually), but most ground staff won't be employed by EZY. So, baggage delivery is variable, but generally good, since connections are not offered and that is where most bags get lost.
This leads me on to Speedy Boarding, well, it depends on the airport. Different airports seem to do this differently. UK airports tend to have a priority queue separated by ropes. Spanish/Italian airports (and I presume Moroccan ones as well) will often have nothing and you have to make your way to the front of the queue when the boarding call is made.
If you board using a bus, then sometimes you get a separate bus, sometimes you don't. As a general rule, if the airport is a base for EZY (where they have aircraft and crews based - see their wiki page), there will be dedicated check-in desks and Speedy Boarding will work well.
Seating is a bit tight, but nothing unbearable in my experience.
[Edited 2011-11-10 12:45:08]
"Freddie Laker may be at peace with his Maker, but he is persona non grata with IATA."- HRH Duke of Edinburgh