You wouldn't look at this and say zentangle, but it is zentangle-integrated. Marta Myska has used the tangles 'Keeko', 'Wadical', 'Striping', and my pattern 'Lacy' to create a fantastic, whimiscal snowman.
Patterns are everywhere. Zentangles reduce the world to abstract pattern, but tangles can also be used to create a very realistic drawing. More of Marta's work can be found at her Flickr site.