Tons.
Web browsers, Operating Systems, analog videotape formats (Beta/VHS) (I’d look for this effect in hidef videodiscs soon as well), peripheral interconnects (USB/firewire), mobile phone transmission protocols (CDMA/GSM), mobile digital audio players (iPod/Zune/etc), programming languages (C++/Java/Python)...
Some examples here might be better than others.
Would it be too hard to believe that the very first replicators actually went extinct several times before the right accidents occurred in the right circumstances to give rise to sufficiently hardy descendants?
Certainly, the first replicator that gave rise to us might be seen as marvelous—but the first replicator //period// may have been plain pathetic.