I've highlighted a few dandelions spotted in films on this blog, but I think this one is pretty spectacular.
I was watching Ice Age (2002) and got this screen shot of Sid eating the rhinos Frank and Carl's salad:
Carl "A dandelion! I thought the frost wiped 'em all out"
But spying the dandelion Sid plucks it up and declares " Oh! Yum-o! A dandelion! Probably the last one of the season!
And promptly eats it, swooning with its deliciousness.