Infopath Viewer
When I was travelling around at the beginning of last year with Smart Client sessions, a common request was for an InfoPath viewer (ie: allow completing InfoPath documents without the need for InfoPath). At the time there wasn't one. Others may have appeared in the meantime but I haven't come across them. One of the members of my INETA User Group Relations committee from Korea has one that's been updated for version 1.5.
I haven't tried it yet but an eval version is at: http://www.infoscope.co.kr/demo/InfoScopeSetup.zip
You can try it online at: http://www.infoscope.co.kr/eng/demo/demo.aspx
He's also promised to make it cheaper for INETA user group members. Thanks Dongbum!