Mass Effect is a good casual RPG/shooter hybrid to get you started. It has the best storyline and characters from the Bioware games I've played, though I must admit I haven't played an older BioWare game than KotOR yet.
Dragon Age II is also a casual RPG but a lot of the design is very lazy and it's definitely not BioWare's high point. I like the characters and story more than the original (I don't understand why people like Morrigan so much. The best characters in the party are the dog and the talking rock), but there's also a lack of choice in DA2 that is uncharacteristic for BioWare.
Dragon Age II is also a casual RPG but a lot of the design is very lazy and it's definitely not BioWare's high point. I like the characters and story more than the original (I don't understand why people like Morrigan so much. The best characters in the party are the dog and the talking rock), but there's also a lack of choice in DA2 that is uncharacteristic for BioWare.