Recommendations for temperature sensors

I didn't see any temperature sensors listed on the site (I could be overlooking them), so I wanted to see what people are using.  Thanks!

Previously wrote:

I didn't see any temperature sensors listed on the site (I could be overlooking them), so I wanted to see what people are using.  Thanks!

there's the LM34 (Fahrenheit temp) which used to be sold here but somehow you can't buy this only anymore (only as part of the 140$ package of sensors)...

http://www.parallax.com/Store/Sensors/TemperatureHumidity/tabid/174/CategoryID/49/List/0/Level/a/ProductID/87/Default.aspx?SortField=ProductName%2cProductName

I googled LM34 and this is one of the first sites I came up with.  There are several different websites that sell them.  Are all LM34 temperature sensors basically the same?

Is there one source that would be better then the other?

People have written code to bit-bang 1-wire, but not that I know of for the MC.  The timing seems doable with a fasttimer.  On the order of 1-480us.

1-wire is different from I2C.  I2C can also be bit-banged.  Again, I don't know of anybody having done that for the MC.

Still working on deciding what I want to do for a temperature sensor.  I am looking into adapting a threaded temperature sensor like one you would find on a car.  Ideally it looks like I need to find a temperature sensor that falls within the range of 0V-3.3V from cold to hot.  If I can't find one that is within this range could I simply supply less voltage to the sensor or add a resistor in to get it within the range I want.

Forgive my lack of experience, I'm terrible with electrical stuff.

you could use a thermistor connected in a voltage divider, should cost about $2 out the door. this is the simplest way to sense temperature.