Those are the topics that I found them the most interesting:
1.Machine Translation
2.Spell checking
3.Word-Sense Disambiguation
4.Information Extraction
5.Emotion recognition
6.Annotation Science
7.Phonology/Morphology, POS Tagging, Word Segmentation
8.Multimodal Representations and Processing
9.Discourse and Pragmatics
10. Music information retrieval
REFERENCES
*Association for Computational Linguistics 2009. (2008-2009). In ACL-IJCNLP 2009. Retrieved 20:54, March 25, 2009, from http://www.acl-ijcnlp-2009.org/index.html
*Human Language Technologies (HLT). In Language Technology World. Retrieved 21:21, March 25, 2009, from http://www.lt-world.org/
*Association for Computational Linguistics 2008. (2007). In ACL-08: HLT. Retrieved 21:13, March 25, 2009, from http://www.ling.ohio-state.edu/acl08/index.html
*Human Language Technologies: The Annual Conference of the North American Chapter of the Association for Computational Linguistics 2007. (2007, January 18). In NAACL-HLT 2007. Retrieved 21:04, March 25, 2009, from http://www.cs.rochester.edu/meetings/hlt-naacl07/call_papers.shtml
*Human Language Technologies (HLT). From Deutsches Forschungszentrum für Künstliche Intelligenz. Retrieved March 25, 2009 21.35 from http://www.dfki.de/lt/projects.php