What are some of the most impressive/forward-thinking IFE features flying today?

I love how SQ allows you to pause entertainment after your flight and pick right back up again on the next flight. That's brilliant. Any other airline offer that?
Does KLM still offer its inflight networking service where you can meet with other people that share your same interests or professions?
What other cool or unique features have you seen when flying that few other airlines offer?