The DLC of Mass Effect 2

Looking for some more Commander Shepard action?  There is plenty of DLC available for Mass Effect 2 to keep you playing for many hours.  I have actually played all the DLC from ME2 and can happily recommend most of it.

One interesting feature that was added into ME2 was the option to gain access to the Cerberus network.  The network is/was basically a tool to inform players about new DLC content, but also allowed players to access some free additional content.  With the Cerberus network you gain access to Zaeed as a possible squadmate as well as his loyalty mission.  You also unlock a unique set of Cerberus themed armor and the arc projector (a heavy weapon the shoots electricity).  There is a short mission to visit the crash site of the original Normandy as well as a series of missions that unlocks the only vehicle in ME2--the Hammerhead.  All of this content is free.

If you're willing to spend some money you can add another new squadmate to your crew as well as accompany everyone's favorite asari, Liara T'Soni, on a mission to find the shadow broker.  "Stolen Memories" adds the character Kasumi Goto to your squad and introduces you to the world of space thievery.  Her loyalty quest involves attending a high society party and breaking into a heavily fortified vault.  It's a fun little side quest with some humorous moments including a Dragon Age easter egg in the form of a giant ogre statue.  There is plenty of combat as you eventually face off against the owner of the stolen objects and his private army.  Kasumi is an interesting character who, sadly, doesn't have a lot of interaction options, but will occasionally give her thoughts about what is going on.

"Lair of the Shadow Broker" music is great.

"Lair of the Shadow Broker" brings back one of the key characters from Mass Effect, the asari scientist Dr. Liara T'Soni, and involves a plot to take down the Shadow Broker.  It takes place on locations around Illium as well as on the Shadow Broker's ship.  I enjoyed the many references to Asari culture as you chase a spectre around a strange "exotically" themed resort.  This content pack also includes a high speed car chase and introduces a new alien species.  Players get the opportunity to renew their relationship with Liara, either romantically or as a friend.  I would recommend "Lair of the Shadow Broker" as the DLC you should buy from ME2.

The largest (content wise) add-on comes in the form of "Overlord."  In "Overlord," the crew of the Normandy is called in to help at a Cerberus facility that has been overtaken by a rogue computer virus. This content pack includes vehicular travel using the Hammerhead and regular combat missions.  As you progress you unravel an insidious Cerberus plot to control the Geth.  The story is interesting, but not as much as "Lair of the Shadow Broker."  It does add in another 3-4 hours of playable content.

If you're more into cosmetic and weapon skins you can also download alternate appearance packs for your crew or seperate sets of armor.  Overall, there is quite a bit of additional content and much of it is enjoyable.