if you're not going to replay I think you made a mistake. Every one of them carries over into ME2 and personalises your universe. Some also feature interesting dialogue dilemmas, especially the space missions. It's fucking terrible, ignore this man. The DLC you want for ME2 is: Zaeed Stolen Memory Overlord Lair of the Shadow Broker The Arrival Of these only Lair of the Shadow Broker is a must have, though I would strongly recommend the others if you have the funds. Except The Arrival, it's not very good, but it is the bridge between ME2 and ME3. Mirriam, these people are ruining ME2 for you.