Question: I was wondering if anyone knows of a free WMS of imagery that I could use within QGIS. The imagery does not have to be high resolution (Blue Marble even). I would like to have a base imagery feed from a WMS.

Any help would be appreciated.

Thanks...

Answer: 
As Curlew stated in their answer, up the openlayers plugin. between bing mapping and google maps on this you basically have most areas with aerial photography.

i asked previous

[Digitizing from OpenLayers Plugin in QGIS, or create raster?](https://gis.stackexchange.com/questions/50130/digitizing-from-openlayers-plugin-in-qgis-or-create-raster)

See this for saving the images and removing the need to load the entire globe.
You can get various WMS imagery layers for British Columbia (landsat, spot, ortho) from [DataBC](http://www.data.gov.bc.ca/dbc/catalogue/index.page?keywords=&config=dbc&sortid=4&rc=1&index=0&index=0&size=25&P110=resType%3aWeb%20Service). You didn't specify a geographic location.