I thought bradfitz's Camlistore talk was interesting (from the Go devroom), so was the Servo talk (Mozilla), as well as the Mailpile alpha announcement.

There were loads of interesting talks and of course it depends on ones personal preferences. I personally found the following talks very interesting, hinting at the continued commoditization and programmability of the infrastructure:

https://fosdem.org/2014/schedule/event/virtiaas05/ - SDN's https://fosdem.org/2014/schedule/event/virtiaas99/ - OSv(cloud/paas operating system) https://fosdem.org/2014/schedule/event/virtiaas11/ - high throughput packet processing OS based on Xen, for replacing expensive middle boxes in the network(firewalls, IDS's etc)

Currently available, not much, but the interesting stuff is coming up. One of the best talks of FOSDEM was the closing Sunday keynote by phk about the NSA (it's not up yet)

There were several very good talks in the Desktops devroom as well (H1308), none of which are up yet either. That includes Lennart Poettering's talk on kdbus, which is the same one he gave at linux.conf.au (http://lwn.net/Articles/580194/).

Web developers will like the mozilla room, watch them all! http://video.fosdem.org/2014/UD2218A/Saturday/

Foreman integration with Chef - Marek Hulan

ProxySQL - Rene Cannao

Automation in the Foreman infrastructure, A story of success. Greg Sutcliffe

Software Archaeology for Beginners - James Turnbull