I've heard good things about Transformers: War for Cybertron. Looks like quite a blast, literally. I enjoyed the stealth/non-violent run in Deus Ex more. It felt a bit more tense for me and it made the overall role playing experience more enjoyable for me. The silenced, fully upgraded 10mm made the game way too easy.
Now that you mention Mass Effect, I'm thinking about it. I'm sure I missed out quite a few side quests throughout the series. I've also been think about giving the multiplayer in Mass Effect 3 another run. It's is surprisingly fun and can get quite challenging.
Pok?mon brings back memories. Haven't played it in ages. It reminds me of the trading cards and primary school. Good times.
On a side note, I found it surprisingly funny that Windows 8 auto corrects Pok?mon. That's pretty awesome