How DLC should be done
Simply put, I was extremely impressed with Lair of the Shadow Broker (LSB). Unlike the previous DLC that were released which felt like tacked on missions or pointless items (with the exception of the recently released weapons pack), LSB really hit home, focusing on the story of Liara's connection with the Shadow Broker (a story branch from the first Mass Effect). Along with a relevant plot and relevant character, it also featured great production values, sufficient length and a variety of cool features that can be accessed after completion of the DLC. I can whole-heartedly recommend this to any owner of ME2.