I absolutely love Give Me Something To Read and Longform.org! There are a lot of great articles that didn't make it to this list, so check out the archives on both websites — the articles are (mostly) timeless.
Instapaper and GMSTR/Longform.org are streets ahead of casual games like Angry Birds for my commute.
There's also Longreads.com
Am I correct in thinking that this is a spin-off from instapaper.com (they take popular saved pages from instapaper to create the content for gmstr.com )? I cann't recommend Instapaper highly enough as a tool for saving web-articles and sending them to my Kindle for off-line reading.
That's what the subtitle says.
Is there something similar for german sites?
Good question. For my part, I'd be interested in Spanish and French equivalents.