The LEGO Jango Fett mini figure is probably the most popular Star Wars LEGO mini figure. Jango Fett himself has proven to be a very popular character from the Attack of the Clones film in the same fashion that Boba Fett was so popular to Star Wars enthusiasts of the original series.

The Jango Fett LEGO mini figure comes with two pistols and headgear.  The minifigs head is plain black with no features.  The only Star Wars LEGO Set that includes this minifig is Jango Fett's Slave I.

Jango Fett is the "father" of LEGO Boba Fett.  Both are considered great bounty hunters and are always playing both sides.  In the Attack of the Clones film Jango Fett is killed in front of his son/clone Boba Fett.  Boba Fett is obviously devestated by this but uses that as motivation to take over his fathers trade.

The LEGO Jango Fett minifig is a pretty rare LEGO minifig and sometimes sells on auction sites (like eBay) for very much inflated prices.